Merge in Windows port using mingw and make.

gui-win32/Makefile

@@ -0,0 +1,19 @@
+ROOT=..
+include ../Make.config
+LIB=libgui.a
+
+OFILES=\
+	alloc.$O\
+	cload.$O\
+	draw.$O\
+	load.$O\
+	screen.$O\
+	wstrtoutf.$O
+
+$(LIB): $(OFILES)
+	$(AR) r $(LIB) $(OFILES)
+	$(RANLIB) $(LIB)
+
+%.$O: %.c
+	$(CC) $(CFLAGS) $*.c
+

gui-win32/mkfile

@@ -1,14 +0,0 @@
-<$DSRC/mkfile-$CONF
-TARG=libgui.$L
-
-OFILES=\
-	alloc.$O\
-	cload.$O\
-	draw.$O\
-	load.$O\
-	screen.$O\
-	wstrtoutf.$O
-
-HFILES=\
-
-<$DSRC/mklib-$CONF

gui-win32/screen.c

@@ -1,5 +1,4 @@
 #include	<windows.h>
-// #include	"winduhz.h"
 
 #undef Rectangle
 #define Rectangle _Rectangle
@@ -564,9 +563,8 @@ clipreadutf(HANDLE h)
 	return p;
 }
 
-
-uchar*
-clipread()
+char*
+clipread(void)
 {
 	HANDLE h;
 	uchar *p;