Help get GTK2 builds going on linux. Thanks to Chris Neale (cdn@mozdev.org) for the patch.
git-svn-id: svn://10.0.0.236/trunk@142476 18797224-902f-48f8-a5cc-f745e15eee43
Synch up bug fixes in from mozilla mailnews into thunderbird.
add a pref: mail.standalone which is set to true for stand alone mail builds.
git-svn-id: svn://10.0.0.236/trunk@141215 18797224-902f-48f8-a5cc-f745e15eee43