am 95f862bc: merge from open-source master

Merge commit '95f862bcb0418fd931c574157a5c90312ea2fb77' into kraken

* commit '95f862bcb0418fd931c574157a5c90312ea2fb77':
  Fix "make modules" script bug under Mac OS X.

core/main.mk

@@ -753,7 +753,7 @@ clobber:
 modules:
 	@echo "Available sub-modules:"
 	@echo "$(call module-names-for-tag-list,$(ALL_MODULE_TAGS))" | \
-	      sed -e 's/  */\n/g' | sort -u | $(COLUMN)
+	      tr -s ' ' '\n' | sort -u | $(COLUMN)
 
 .PHONY: showcommands
 showcommands: