the new way we determine the old path: check the pref, if set use it. if not set, use <4.x profile directory>/<Localized word for "Mail"> if it exists if it doesn't exist, use <4.x profile directory>/"Mail" r=putterman,sr=mscott git-svn-id: svn://10.0.0.236/trunk@81176 18797224-902f-48f8-a5cc-f745e15eee43