updated for version 7.3.1109
Problem:    Building on MS-Windows doesn't see changes in if_py_both.h.
Solution:   Add a dependency. (Ken Takata)
diff --git a/src/Make_cyg.mak b/src/Make_cyg.mak
index d72282a..68c44f0 100644
--- a/src/Make_cyg.mak
+++ b/src/Make_cyg.mak
@@ -648,10 +648,10 @@
 $(OUTDIR)/if_ole.o:	if_ole.cpp $(INCL)
 	$(CC) -c $(CFLAGS) if_ole.cpp -o $(OUTDIR)/if_ole.o
 
-$(OUTDIR)/if_python.o : if_python.c $(INCL)
+$(OUTDIR)/if_python.o : if_python.c if_py_both.h $(INCL)
 	$(CC) -c $(CFLAGS) -I$(PYTHON)/include $< -o $@
 
-$(OUTDIR)/if_python3.o : if_python3.c $(INCL)
+$(OUTDIR)/if_python3.o : if_python3.c if_py_both.h $(INCL)
 	$(CC) -c $(CFLAGS) -I$(PYTHON3)/include $< -o $@
 
 if_perl.c: if_perl.xs typemap