patch 8.1.0941: macros for MS-Windows are inconsistent
Problem: Macros for MS-Windows are inconsistent, using "32", "3264 and
others.
Solution: Use MSWIN for all MS-Windows builds. Use FEAT_GUI_MSWIN for the
GUI build. (Hirohito Higashi, closes #3932)
diff --git a/src/Make_bc5.mak b/src/Make_bc5.mak
index 30fe727..04f7885 100644
--- a/src/Make_bc5.mak
+++ b/src/Make_bc5.mak
@@ -405,7 +405,7 @@
!endif
!if ("$(GUI)"=="yes")
-DEFINES = $(DEFINES) -DFEAT_GUI_W32 -DFEAT_CLIPBOARD
+DEFINES = $(DEFINES) -DFEAT_GUI -DFEAT_CLIPBOARD
!if ("$(DEBUG)"=="yes")
TARGET = gvimd.exe
!else