clean more

* Makefile.in (clean-local): remove debug symbol directories on
  Mac OS.

* common.mk (clean-ext): remove parent directories of timestamp
  directory.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@57726 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

Makefile.in

@@ -408,7 +408,7 @@ clean-local::
 	$(Q)$(RM) ext/extinit.c ext/extinit.$(OBJEXT) ext/ripper/y.output \
 		enc/encinit.c enc/encinit.$(OBJEXT)
 	-$(Q)$(RM) $(pkgconfig_DATA)
-	-$(Q)$(RMALL) ruby-runner$(EXEEXT) ruby-runner.h ruby-runner.*/
+	-$(Q)$(RMALL) ruby-runner$(EXEEXT) ruby-runner.h *.dSYM
 
 distclean-local::
 	$(Q)$(RM) ext/config.cache $(RBCONFIG) Doxyfile

common.mk

@@ -563,7 +563,7 @@ realclean-extout: distclean-extout
 clean-ext distclean-ext realclean-ext::
 	$(Q)$(RM) $(EXTS_MK)
 	$(Q)$(RM) $(TIMESTAMPDIR)/.*.time $(TIMESTAMPDIR)/.$(arch).time $(TIMESTAMPDIR)/$(arch)/.time
-	$(Q)$(RMDIR) $(TIMESTAMPDIR)/$(arch) $(TIMESTAMPDIR) 2> $(NULL) || exit 0
+	$(Q)$(RMDIRS) $(TIMESTAMPDIR)/$(arch) 2> $(NULL) || exit 0
 
 clean-enc distclean-enc realclean-enc: PHONY