Do not include sys/ptrace.h and sys/user.h unconditionally.
Other portability fixes.

diff --git a/configure b/configure
index 3e24d0b..e1c864a 100755
--- a/configure
+++ b/configure
@@ -5529,6 +5529,7 @@
 	sys/mount.h \
 	sys/msg.h \
 	sys/param.h \
+	sys/ptrace.h \
 	sys/reg.h \
 	sys/signal.h \
 	sys/shm.h \
@@ -5537,6 +5538,7 @@
 	sys/statfs.h \
 	sys/strtio.h \
 	sys/syscall.h \
+	sys/user.h \
 	sys/wait.h \
 	sys/v86.h \
 	sys/v86intr.h \
@@ -5548,17 +5550,17 @@
 do
 ac_safe=`echo "$ac_hdr" | sed 'y%./+-%__p_%'`
 echo $ac_n "checking for $ac_hdr""... $ac_c" 1>&6
-echo "configure:5552: checking for $ac_hdr" >&5
+echo "configure:5554: checking for $ac_hdr" >&5
 if eval "test \"`echo '$''{'ac_cv_header_$ac_safe'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 5557 "configure"
+#line 5559 "configure"
 #include "confdefs.h"
 #include <$ac_hdr>
 EOF
 ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
-{ (eval echo configure:5562: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
+{ (eval echo configure:5564: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
 ac_err=`grep -v '^ *+' conftest.out | grep -v "^conftest.${ac_ext}\$"`
 if test -z "$ac_err"; then
   rm -rf conftest*
@@ -5585,12 +5587,12 @@
 done
 
 echo $ac_n "checking whether stat file-mode macros are broken""... $ac_c" 1>&6
-echo "configure:5589: checking whether stat file-mode macros are broken" >&5
+echo "configure:5591: checking whether stat file-mode macros are broken" >&5
 if eval "test \"`echo '$''{'ac_cv_header_stat_broken'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 5594 "configure"
+#line 5596 "configure"
 #include "confdefs.h"
 #include <sys/types.h>
 #include <sys/stat.h>
@@ -5643,12 +5645,12 @@
 
 
 echo $ac_n "checking for working const""... $ac_c" 1>&6
-echo "configure:5647: checking for working const" >&5
+echo "configure:5649: checking for working const" >&5
 if eval "test \"`echo '$''{'ac_cv_c_const'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 5652 "configure"
+#line 5654 "configure"
 #include "confdefs.h"
 
 int main() {
@@ -5697,7 +5699,7 @@
 
 ; return 0; }
 EOF
-if { (eval echo configure:5701: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:5703: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   ac_cv_c_const=yes
 else
@@ -5718,21 +5720,21 @@
 fi
 
 echo $ac_n "checking for inline""... $ac_c" 1>&6
-echo "configure:5722: checking for inline" >&5
+echo "configure:5724: checking for inline" >&5
 if eval "test \"`echo '$''{'ac_cv_c_inline'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   ac_cv_c_inline=no
 for ac_kw in inline __inline__ __inline; do
   cat > conftest.$ac_ext <<EOF
-#line 5729 "configure"
+#line 5731 "configure"
 #include "confdefs.h"
 
 int main() {
 } int $ac_kw foo() {
 ; return 0; }
 EOF
-if { (eval echo configure:5736: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:5738: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   ac_cv_c_inline=$ac_kw; break
 else
@@ -5758,12 +5760,12 @@
 esac
 
 echo $ac_n "checking for ANSI C header files""... $ac_c" 1>&6
-echo "configure:5762: checking for ANSI C header files" >&5
+echo "configure:5764: checking for ANSI C header files" >&5
 if eval "test \"`echo '$''{'ac_cv_header_stdc'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 5767 "configure"
+#line 5769 "configure"
 #include "confdefs.h"
 #include <stdlib.h>
 #include <stdarg.h>
@@ -5771,7 +5773,7 @@
 #include <float.h>
 EOF
 ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
-{ (eval echo configure:5775: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
+{ (eval echo configure:5777: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
 ac_err=`grep -v '^ *+' conftest.out | grep -v "^conftest.${ac_ext}\$"`
 if test -z "$ac_err"; then
   rm -rf conftest*
@@ -5788,7 +5790,7 @@
 if test $ac_cv_header_stdc = yes; then
   # SunOS 4.x string.h does not declare mem*, contrary to ANSI.
 cat > conftest.$ac_ext <<EOF
-#line 5792 "configure"
+#line 5794 "configure"
 #include "confdefs.h"
 #include <string.h>
 EOF
@@ -5806,7 +5808,7 @@
 if test $ac_cv_header_stdc = yes; then
   # ISC 2.0.2 stdlib.h does not declare free, contrary to ANSI.
 cat > conftest.$ac_ext <<EOF
-#line 5810 "configure"
+#line 5812 "configure"
 #include "confdefs.h"
 #include <stdlib.h>
 EOF
@@ -5827,7 +5829,7 @@
   :
 else
   cat > conftest.$ac_ext <<EOF
-#line 5831 "configure"
+#line 5833 "configure"
 #include "confdefs.h"
 #include <ctype.h>
 #define ISLOWER(c) ('a' <= (c) && (c) <= 'z')
@@ -5838,7 +5840,7 @@
 exit (0); }
 
 EOF
-if { (eval echo configure:5842: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
+if { (eval echo configure:5844: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
 then
   :
 else
@@ -5862,12 +5864,12 @@
 fi
 
 echo $ac_n "checking for size_t""... $ac_c" 1>&6
-echo "configure:5866: checking for size_t" >&5
+echo "configure:5868: checking for size_t" >&5
 if eval "test \"`echo '$''{'ac_cv_type_size_t'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 5871 "configure"
+#line 5873 "configure"
 #include "confdefs.h"
 #include <sys/types.h>
 #if STDC_HEADERS
@@ -5895,7 +5897,7 @@
 fi
 
 echo $ac_n "checking size of long long""... $ac_c" 1>&6
-echo "configure:5899: checking size of long long" >&5
+echo "configure:5901: checking size of long long" >&5
 if eval "test \"`echo '$''{'ac_cv_sizeof_long_long'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -5903,7 +5905,7 @@
   ac_cv_sizeof_long_long=0
 else
   cat > conftest.$ac_ext <<EOF
-#line 5907 "configure"
+#line 5909 "configure"
 #include "confdefs.h"
 #include <stdio.h>
 main()
@@ -5914,7 +5916,7 @@
   exit(0);
 }
 EOF
-if { (eval echo configure:5918: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
+if { (eval echo configure:5920: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
 then
   ac_cv_sizeof_long_long=`cat conftestval`
 else
@@ -5936,12 +5938,12 @@
 
    
 echo $ac_n "checking "whether we can use re-entrant gethostbyname_r Linux style"""... $ac_c" 1>&6
-echo "configure:5940: checking "whether we can use re-entrant gethostbyname_r Linux style"" >&5
+echo "configure:5942: checking "whether we can use re-entrant gethostbyname_r Linux style"" >&5
 if eval "test \"`echo '$''{'wine_cv_linux_gethostbyname_r_6'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 5945 "configure"
+#line 5947 "configure"
 #include "confdefs.h"
 
 #include <netdb.h>
@@ -5962,7 +5964,7 @@
     
 ; return 0; }
 EOF
-if { (eval echo configure:5966: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:5968: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   wine_cv_linux_gethostbyname_r_6=yes
 else
@@ -5988,12 +5990,12 @@
 if test "$ac_cv_header_linux_joystick_h" = "yes"
 then
    echo $ac_n "checking "whether linux/joystick.h uses the Linux 2.2+ API"""... $ac_c" 1>&6
-echo "configure:5992: checking "whether linux/joystick.h uses the Linux 2.2+ API"" >&5
+echo "configure:5994: checking "whether linux/joystick.h uses the Linux 2.2+ API"" >&5
 if eval "test \"`echo '$''{'wine_cv_linux_joystick_22_api'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 5997 "configure"
+#line 5999 "configure"
 #include "confdefs.h"
 
 	#include <sys/ioctl.h>
@@ -6008,7 +6010,7 @@
 /*empty*/
 ; return 0; }
 EOF
-if { (eval echo configure:6012: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:6014: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   wine_cv_linux_joystick_22_api=yes
 else
@@ -6035,12 +6037,12 @@
 if test "$ac_cv_header_sys_vfs_h" = "yes"
 then
     echo $ac_n "checking "whether sys/vfs.h defines statfs"""... $ac_c" 1>&6
-echo "configure:6039: checking "whether sys/vfs.h defines statfs"" >&5
+echo "configure:6041: checking "whether sys/vfs.h defines statfs"" >&5
 if eval "test \"`echo '$''{'wine_cv_sys_vfs_has_statfs'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 6044 "configure"
+#line 6046 "configure"
 #include "confdefs.h"
 
 	#include <sys/types.h>
@@ -6057,7 +6059,7 @@
 	
 ; return 0; }
 EOF
-if { (eval echo configure:6061: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:6063: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   wine_cv_sys_vfs_has_statfs=yes
 else
@@ -6084,12 +6086,12 @@
 if test "$ac_cv_header_sys_statfs_h" = "yes"
 then
     echo $ac_n "checking "whether sys/statfs.h defines statfs"""... $ac_c" 1>&6
-echo "configure:6088: checking "whether sys/statfs.h defines statfs"" >&5
+echo "configure:6090: checking "whether sys/statfs.h defines statfs"" >&5
 if eval "test \"`echo '$''{'wine_cv_sys_statfs_has_statfs'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 6093 "configure"
+#line 6095 "configure"
 #include "confdefs.h"
 
 	#include <sys/types.h>
@@ -6104,7 +6106,7 @@
 	
 ; return 0; }
 EOF
-if { (eval echo configure:6108: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:6110: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   wine_cv_sys_statfs_has_statfs=yes
 else
@@ -6131,12 +6133,12 @@
 if test "$ac_cv_header_sys_mount_h" = "yes"
 then
     echo $ac_n "checking "whether sys/mount.h defines statfs"""... $ac_c" 1>&6
-echo "configure:6135: checking "whether sys/mount.h defines statfs"" >&5
+echo "configure:6137: checking "whether sys/mount.h defines statfs"" >&5
 if eval "test \"`echo '$''{'wine_cv_sys_mount_has_statfs'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 6140 "configure"
+#line 6142 "configure"
 #include "confdefs.h"
 
 	#include <sys/types.h>
@@ -6151,7 +6153,7 @@
 	
 ; return 0; }
 EOF
-if { (eval echo configure:6155: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:6157: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   wine_cv_sys_mount_has_statfs=yes
 else
@@ -6177,7 +6179,7 @@
 
 
 echo $ac_n "checking "for statfs.f_bfree"""... $ac_c" 1>&6
-echo "configure:6181: checking "for statfs.f_bfree"" >&5
+echo "configure:6183: checking "for statfs.f_bfree"" >&5
 if eval "test \"`echo '$''{'wine_cv_statfs_bfree'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -6186,7 +6188,7 @@
         wine_cv_statfs_bfree=no
     else
     	cat > conftest.$ac_ext <<EOF
-#line 6190 "configure"
+#line 6192 "configure"
 #include "confdefs.h"
 
 	#include <sys/types.h>
@@ -6213,7 +6215,7 @@
 	
 ; return 0; }
 EOF
-if { (eval echo configure:6217: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:6219: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   wine_cv_statfs_bfree=yes
 else
@@ -6237,7 +6239,7 @@
 fi
 
 echo $ac_n "checking "for statfs.f_bavail"""... $ac_c" 1>&6
-echo "configure:6241: checking "for statfs.f_bavail"" >&5
+echo "configure:6243: checking "for statfs.f_bavail"" >&5
 if eval "test \"`echo '$''{'wine_cv_statfs_bavail'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -6246,7 +6248,7 @@
         wine_cv_statfs_bavail=no
     else
     	cat > conftest.$ac_ext <<EOF
-#line 6250 "configure"
+#line 6252 "configure"
 #include "confdefs.h"
 
 	#include <sys/types.h>
@@ -6273,7 +6275,7 @@
 	
 ; return 0; }
 EOF
-if { (eval echo configure:6277: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:6279: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   wine_cv_statfs_bavail=yes
 else
@@ -6298,12 +6300,12 @@
 
 
 echo $ac_n "checking "for msg_accrights in struct msghdr"""... $ac_c" 1>&6
-echo "configure:6302: checking "for msg_accrights in struct msghdr"" >&5
+echo "configure:6304: checking "for msg_accrights in struct msghdr"" >&5
 if eval "test \"`echo '$''{'ac_cv_c_msg_accrights'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 6307 "configure"
+#line 6309 "configure"
 #include "confdefs.h"
 #include <sys/types.h>
 #include <sys/socket.h>
@@ -6311,7 +6313,7 @@
 struct msghdr hdr; hdr.msg_accrights=0
 ; return 0; }
 EOF
-if { (eval echo configure:6315: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:6317: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   ac_cv_c_msg_accrights="yes"
 else
@@ -6334,12 +6336,12 @@
 
 
 echo $ac_n "checking "for sun_len in struct sockaddr_un"""... $ac_c" 1>&6
-echo "configure:6338: checking "for sun_len in struct sockaddr_un"" >&5
+echo "configure:6340: checking "for sun_len in struct sockaddr_un"" >&5
 if eval "test \"`echo '$''{'ac_cv_c_sun_len'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 6343 "configure"
+#line 6345 "configure"
 #include "confdefs.h"
 #include <sys/types.h>
 #include <sys/socket.h>
@@ -6348,7 +6350,7 @@
 static struct sockaddr_un addr; addr.sun_len = 1
 ; return 0; }
 EOF
-if { (eval echo configure:6352: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:6354: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   ac_cv_c_sun_len="yes"
 else
@@ -6371,12 +6373,12 @@
 
 
 echo $ac_n "checking "whether we need to define __i386__"""... $ac_c" 1>&6
-echo "configure:6375: checking "whether we need to define __i386__"" >&5
+echo "configure:6377: checking "whether we need to define __i386__"" >&5
 if eval "test \"`echo '$''{'ac_cv_cpp_def_i386'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 6380 "configure"
+#line 6382 "configure"
 #include "confdefs.h"
 #if (defined(i386) || defined(__i386)) && !defined(__i386__)
 yes