Need to cat huge list of makefiles directly to xargs instead of using variables.

Bug #37095 r=jdunn@netscape.com

Makefile.in

@@ -160,7 +160,7 @@ STATIC_MAKEFILES := $(NSPRPUB_DIR)
 GARBAGE_DIRS += dist
 DIST_GARBAGE = config.cache config.log config.status config-defs.h \
    dependencies.beos config/autoconf.mk config/myrules.mk config/myconfig.mk \
-   $(shell cat unallmakefiles) unallmakefiles \
+   unallmakefiles \
    $(topsrcdir)/.mozconfig.mk $(topsrcdir)/.mozconfig.out 
 
 include $(topsrcdir)/config/rules.mk
@@ -168,3 +168,7 @@ include $(topsrcdir)/config/rules.mk
 export::
 	+$(LOOP_OVER_EXPORT_DIRS)
 
+distclean::
+	cat unallmakefiles | $(XARGS) rm -f
+	rm -f unallmakefiles $(DIST_GARBAGE)
+

config/rules.mk

@@ -574,10 +574,10 @@ distclean:: $(SUBMAKEFILES)
 	+$(LOOP_OVER_EXPORT_DIRS)
 	rm -f $(ALL_TRASH) ; \
 	rm -rf $(ALL_TRASH_DIRS) ;
-	echo $(wildcard *.map) \
-	Makefile .HSancillary $(DIST_GARBAGE) \
+	rm -rf $(wildcard *.map) \
+	Makefile .HSancillary \
 	$(wildcard *.$(OBJ_SUFFIX)) $(wildcard *.ho) \
-	$(wildcard *.$(LIB_SUFFIX)) $(wildcard *$(DLL_SUFFIX)) | $(XARGS) rm -f
+	$(wildcard *.$(LIB_SUFFIX)) $(wildcard *$(DLL_SUFFIX))
 
 alltags:
 	rm -f TAGS