* common.mk (up): pass MFLAGS.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@15301 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

common.mk

@@ -796,7 +796,7 @@ dist: $(PROGRAM)
 
 up:
 	@$(VCS) up "$(srcdir)"
-	-@$(MAKE) "$(srcdir)/revision.h"
+	-@$(MAKE) $(MFLAGS) "$(srcdir)/revision.h"
 
 help:
 	@echo "                Makefile of Ruby"