Hack for post-mozilla-rel.pl on Linux (until Firefox installer is hooked up). Ensure /installer exists since the packaging looks for it.

browser/installer/Makefile.in

@@ -66,3 +66,10 @@ NO_PKG_FILES = \
 	$(NULL)
 
 include $(DEPTH)/xpinstall/packager/Makefile
+
+# Hack for post-mozilla-rel.pl.  Ensure that the installer directory is created
+# even if we didn't build an installer.
+libs::
+	@if [ ! -d $(DEPTH)/installer ]; then \
+	  mkdir $(DEPTH)/installer; \
+	fi