Added --disable-win16 configure option.

configure

diff --git a/configure b/configure
index 845d573..a4a1088 100755
--- a/configure
+++ b/configure
@@ -832,6 +832,7 @@
 Optional Features:
   --disable-FEATURE       do not include FEATURE (same as --enable-FEATURE=no)
   --enable-FEATURE[=ARG]  include FEATURE [ARG=yes]
+  --disable-win16         do not include Win16 support
   --disable-debug         compile out all debugging messages
   --disable-trace         compile out TRACE messages
   --enable-opengl         force usage of OpenGL even if the latter is
@@ -1244,6 +1245,11 @@
 LIBEXT="so"
 
 
+# Check whether --enable-win16 or --disable-win16 was given.
+if test "${enable_win16+set}" = set; then
+  enableval="$enable_win16"
+
+fi;
 # Check whether --enable-debug or --disable-debug was given.
 if test "${enable_debug+set}" = set; then
   enableval="$enable_debug"
@@ -1273,6 +1279,15 @@
 fi;
 
 
+WIN16_FILES="\$(WIN16_FILES)"
+
+WIN16_INSTALL="\$(WIN16_INSTALL)"
+
+if test "x$enable_win16" = "xno"
+then
+  WIN16_FILES=""
+  WIN16_INSTALL=""
+fi
 if test "x$enable_debug" = "xno"
 then
 
@@ -14940,6 +14955,8 @@
 s,@LIBS@,$LIBS,;t t
 s,@LIBEXT@,$LIBEXT,;t t
 s,@OPTIONS@,$OPTIONS,;t t
+s,@WIN16_FILES@,$WIN16_FILES,;t t
+s,@WIN16_INSTALL@,$WIN16_INSTALL,;t t
 s,@build@,$build,;t t
 s,@build_cpu@,$build_cpu,;t t
 s,@build_vendor@,$build_vendor,;t t