updated for version 7.3.775
Problem:    Cygwin and Mingw builds miss dependency on gui_w48.c.
Solution:   Add a build rule. (Ken Takata)
diff --git a/src/Make_cyg.mak b/src/Make_cyg.mak
index a561416..087b68e 100644
--- a/src/Make_cyg.mak
+++ b/src/Make_cyg.mak
@@ -600,6 +600,9 @@
 $(OUTDIR)/ex_eval.o:	ex_eval.c $(INCL) ex_cmds.h
 	$(CC) -c $(CFLAGS) ex_eval.c -o $(OUTDIR)/ex_eval.o
 
+$(OUTDIR)/gui_w32.o:	gui_w32.c gui_w48.c $(INCL)
+	$(CC) -c $(CFLAGS) gui_w32.c -o $(OUTDIR)/gui_w32.o
+
 $(OUTDIR)/if_cscope.o:	if_cscope.c $(INCL) if_cscope.h
 	$(CC) -c $(CFLAGS) if_cscope.c -o $(OUTDIR)/if_cscope.o