when an individual directory dist-clean is run, run clean in that directory first, and when running top-level dist-clean, do not run subdirectory clean operations twice

git-svn-id: https://origsvn.digium.com/svn/asterisk/branches/1.4@157163 65c4cc65-6c06-0410-ace0-fbb531ad65f3

Makefile

@@ -373,7 +373,9 @@ $(SUBDIRS_CLEAN):
 $(SUBDIRS_DIST_CLEAN):
 	@$(MAKE) --no-print-directory -C $(@:-dist-clean=) dist-clean
 
-clean: $(SUBDIRS_CLEAN)
+clean: $(SUBDIRS_CLEAN) _clean
+
+_clean:
 	rm -f defaults.h
 	rm -f include/asterisk/build.h
 	rm -f include/asterisk/version.h
@@ -382,7 +384,7 @@ clean: $(SUBDIRS_CLEAN)
 
 dist-clean: distclean
 
-distclean: $(SUBDIRS_DIST_CLEAN) clean
+distclean: $(SUBDIRS_DIST_CLEAN) _clean
 	@$(MAKE) -C menuselect dist-clean
 	@$(MAKE) -C sounds dist-clean
 	rm -f menuselect.makeopts makeopts menuselect-tree menuselect.makedeps
@@ -758,6 +760,6 @@ menuselect-tree: $(foreach dir,$(filter-out main,$(MOD_SUBDIRS)),$(wildcard $(di
 	@cat sounds/sounds.xml >> $@
 	@echo "</menu>" >> $@
 
-.PHONY: menuselect main sounds clean dist-clean distclean all prereqs cleantest uninstall _uninstall uninstall-all dont-optimize $(SUBDIRS_INSTALL) $(SUBDIRS_DIST_CLEAN) $(SUBDIRS_CLEAN) $(SUBDIRS_UNINSTALL) $(SUBDIRS) $(MOD_SUBDIRS_EMBED_LDSCRIPT) $(MOD_SUBDIRS_EMBED_LDFLAGS) $(MOD_SUBDIRS_EMBED_LIBS) badshell menuselect.makeopts installdirs
+.PHONY: menuselect main sounds clean dist-clean distclean all prereqs cleantest uninstall _uninstall uninstall-all dont-optimize $(SUBDIRS_INSTALL) $(SUBDIRS_DIST_CLEAN) $(SUBDIRS_CLEAN) $(SUBDIRS_UNINSTALL) $(SUBDIRS) $(MOD_SUBDIRS_EMBED_LDSCRIPT) $(MOD_SUBDIRS_EMBED_LDFLAGS) $(MOD_SUBDIRS_EMBED_LIBS) badshell menuselect.makeopts installdirs _clean
 
 FORCE:

Makefile.rules

@@ -78,4 +78,4 @@ endif
 	$(ECHO_PREFIX) echo "   [LD] $^ -> $@"
 	$(CMD_PREFIX) $(CXX) $(STATIC_BUILD) -o $@ $(PTHREAD_CFLAGS) $(ASTLDFLAGS) $^ $(PTHREAD_LIBS) $(LIBS)
 
-dist-clean::
+dist-clean:: clean