Bug 464707 - port upload build target to comm-central apps

(Bv1-MC) 1 s/topsrcdir/MOZILLA_DIR/

toolkit/mozapps/installer/packager.mk

@@ -505,7 +505,7 @@ space = $(empty) $(empty)
 QUOTED_WILDCARD = $(if $(wildcard $(subst $(space),?,$(1))),"$(1)")
 
 upload:
-	$(PYTHON) $(topsrcdir)/build/upload.py --base-path $(DIST) \
+	$(PYTHON) $(MOZILLA_DIR)/build/upload.py --base-path $(DIST) \
 		$(call QUOTED_WILDCARD,$(DIST)/$(PACKAGE)) \
 		$(call QUOTED_WILDCARD,$(INSTALLER_PACKAGE)) \
 		$(call QUOTED_WILDCARD,$(DIST)/$(COMPLETE_MAR)) \