common.mk: split after-update

* common.mk (after-update): move platform independent targets from
  Makefile.in.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@48068 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

Makefile.in

@@ -439,7 +439,7 @@ up::
 up::
 	-$(Q)$(MAKE) $(MFLAGS) after-update
 
-after-update:: update-config_files update-unicode update-gems
+after-update:: update-config_files
 
 update-mspec:
 	@$(CHDIR) $(srcdir); \

common.mk

@@ -1075,6 +1075,8 @@ dist:
 up::
 	-$(Q)$(MAKE) $(MFLAGS) REVISION_FORCE=PHONY "$(REVISION_H)"
 
+after-update:: update-unicode update-gems
+
 update-config_files: PHONY
 	$(Q) $(BASERUBY) -C "$(srcdir)/tool" \
 	    ../tool/downloader.rb -e gnu \