Bug 818246 - Part 6: Support XPIDL_MODULE in moz.build; r=gps
Bug 818246 - Part 7: Move XPIDL_MODULE to moz.build; rs=gps
Bug 818246 - Part 8: Support XPIDL_FLAGS in moz.build; r=gps
Bug 818246 - Part 9: Move XPIDL_FLAGS to moz.build; r=gps