No bug: Fix ply being stupid, take 2. r=me

js/xpconnect/src/Makefile.in

@@ -172,7 +172,7 @@ dombindings_gen.h: $(srcdir)/dombindings.conf \
 	  -I$(topsrcdir)/xpcom/idl-parser \
 	  $(srcdir)/dombindingsgen.py \
 	  --idlpath=$(DEPTH)/dist/idl \
-	  --cachedir=$(DEPTH)/xpcom/idl-parser/cache \
+	  --cachedir=$(DEPTH)/xpcom/idl-parser \
 	  --header-output dombindings_gen.h \
 	  $(srcdir)/dombindings.conf
 
@@ -189,7 +189,7 @@ dombindings_gen.cpp: $(srcdir)/dombindings.conf \
 	  -I$(topsrcdir)/xpcom/idl-parser \
 	  $(srcdir)/dombindingsgen.py \
 	  --idlpath=$(DEPTH)/dist/idl \
-	  --cachedir=$(DEPTH)/xpcom/idl-parser/cache \
+	  --cachedir=$(DEPTH)/xpcom/idl-parser \
 	  --stub-output dombindings_gen.cpp \
 	  --makedepend-output $(MDDEPDIR)/dombindingsgen.pp \
 	  $(srcdir)/dombindings.conf
@@ -208,7 +208,7 @@ DictionaryHelpers.h: $(srcdir)/dictionary_helper_gen.conf \
 	  -I$(topsrcdir)/xpcom/idl-parser \
 	  $(srcdir)/dictionary_helper_gen.py \
 	  -I $(DEPTH)/dist/idl \
-	  --cachedir=$(DEPTH)/xpcom/idl-parser/cache \
+	  --cachedir=$(DEPTH)/xpcom/idl-parser \
 	  --header-output DictionaryHelpers.h \
 	  $(srcdir)/dictionary_helper_gen.conf
 
@@ -223,7 +223,7 @@ DictionaryHelpers.cpp: $(srcdir)/dictionary_helper_gen.conf \
 	  -I$(topsrcdir)/xpcom/idl-parser \
 	  $(srcdir)/dictionary_helper_gen.py \
 	  -I $(DEPTH)/dist/idl \
-	  --cachedir=$(DEPTH)/xpcom/idl-parser/cache \
+	  --cachedir=$(DEPTH)/xpcom/idl-parser \
 	  --header-output DictionaryHelpers.h \
 	  --stub-output DictionaryHelpers.cpp \
 	  --makedepend-output $(MDDEPDIR)/dictionary_helper_gen.pp \
@@ -248,9 +248,6 @@ GARBAGE += \
 		$(MDDEPDIR)/dombindingsgen.pp \
 		$(MDDEPDIR)/dictionary_helper_gen.pp \
 		$(wildcard $(topsrcdir)/other-licenses/ply/ply/*.pyc) \
-		$(wildcard $(topsrcdir)/xpcom/idl-parser/*.pyc) \
 		$(NULL)
 
-GARBAGE_DIRS += $(DEPTH)/xpcom/idl-parser/cache
-
 DEFINES += -D_IMPL_NS_LAYOUT