Makefile: Try to force the makefile to be rebuilt with non-GNU make too.
diff --git a/Makefile.in b/Makefile.in
index 923a33e..5c58163 100644
--- a/Makefile.in
+++ b/Makefile.in
@@ -482,6 +482,8 @@
 
 Makefile $(ALL_MAKEFILES): config.status
 	@./config.status $@
+.INIT: Makefile
+.BEGIN: Makefile
 
 $(RECURSE_TARGETS) $(MAKEDEP): $(ALL_MAKEFILES)