fix for bug #381225: on import, places bookmarks builds attempt to merge in bookmarks.html, where firefox 2 appends bookmarks fix for bug #380449: potential data loss on export of LAST_MODIFIED, DATE_ADDED and ICON_URI attributes r=dietrich git-svn-id: svn://10.0.0.236/trunk@228736 18797224-902f-48f8-a5cc-f745e15eee43