makefiles: Rename the SRCDIR, TOPSRCDIR and TOPOBJDIR variables to follow autoconf conventions.
diff --git a/Make.vars.in b/Make.vars.in
index 9bc1b0d8..f04a088 100644
--- a/Make.vars.in
+++ b/Make.vars.in
@@ -13,9 +13,9 @@
 includedir      = @includedir@/wine
 dlldir          = @libdir@/wine
 fakedlldir      = $(dlldir)/fakedlls
-TOPSRCDIR       = @top_srcdir@
-TOPOBJDIR       = @top_builddir@
-SRCDIR          = @srcdir@
+top_srcdir      = @top_srcdir@
+top_builddir    = @top_builddir@
+srcdir          = @srcdir@
 VPATH           = @srcdir@
 SHELL           = /bin/sh
 RM              = rm -f
@@ -55,11 +55,11 @@
 CROSSTARGET     = @CROSSTARGET@
 CROSSAR         = $(CROSSTARGET)-ar
 CROSSRANLIB     = $(CROSSTARGET)-ranlib
-MKINSTALLDIRS   = $(TOPSRCDIR)/tools/mkinstalldirs -m 755
-WINAPI_CHECK    = $(TOPSRCDIR)/tools/winapi/winapi_check
-BUILDIMAGE      = $(TOPSRCDIR)/tools/buildimage
-C2MAN           = $(TOPSRCDIR)/tools/c2man.pl
-RUNTEST         = $(TOPSRCDIR)/tools/runtest
+MKINSTALLDIRS   = $(top_srcdir)/tools/mkinstalldirs -m 755
+WINAPI_CHECK    = $(top_srcdir)/tools/winapi/winapi_check
+BUILDIMAGE      = $(top_srcdir)/tools/buildimage
+C2MAN           = $(top_srcdir)/tools/c2man.pl
+RUNTEST         = $(top_srcdir)/tools/runtest
 MAKECTESTS      = $(TOOLSDIR)/tools/make_ctests$(TOOLSEXT)
 MAKEDEP         = $(TOOLSDIR)/tools/makedep$(TOOLSEXT)
 RELPATH         = $(TOOLSDIR)/tools/relpath$(TOOLSEXT)
@@ -68,11 +68,11 @@
 WINEBUILD       = $(TOOLSDIR)/tools/winebuild/winebuild$(TOOLSEXT)
 WMC             = $(TOOLSDIR)/tools/wmc/wmc$(TOOLSEXT)
 WRC             = $(TOOLSDIR)/tools/wrc/wrc$(TOOLSEXT)
-LIBPORT         = $(TOPOBJDIR)/libs/port/libwine_port.a
-LIBWPP          = $(TOPOBJDIR)/libs/wpp/libwpp.a
-LIBWINE         = -L$(TOPOBJDIR)/libs/wine -lwine
-WINEGCC         = $(TOOLSDIR)/tools/winegcc/winegcc $(TARGETFLAGS) -B$(TOOLSDIR)/tools/winebuild --sysroot=$(TOPOBJDIR) @UNWINDFLAGS@
-CROSSWINEGCC    = $(TOOLSDIR)/tools/winegcc/winegcc $(CROSSTARGET:%=-b %) -B$(TOOLSDIR)/tools/winebuild --sysroot=$(TOPOBJDIR) --lib-suffix=.cross.a
+LIBPORT         = $(top_builddir)/libs/port/libwine_port.a
+LIBWPP          = $(top_builddir)/libs/wpp/libwpp.a
+LIBWINE         = -L$(top_builddir)/libs/wine -lwine
+WINEGCC         = $(TOOLSDIR)/tools/winegcc/winegcc $(TARGETFLAGS) -B$(TOOLSDIR)/tools/winebuild --sysroot=$(top_builddir) @UNWINDFLAGS@
+CROSSWINEGCC    = $(TOOLSDIR)/tools/winegcc/winegcc $(CROSSTARGET:%=-b %) -B$(TOOLSDIR)/tools/winebuild --sysroot=$(top_builddir) --lib-suffix=.cross.a
 LDPATH          = @LDPATH@
 LDRPATH_INSTALL = @LDRPATH_INSTALL@
 LDRPATH_LOCAL   = @LDRPATH_LOCAL@