Bug fix - post 2.65a

New option "Keep Session" was not using "untitled.blend" as default save name,
in case a startup.blend was kept as session. Could give bad accidents.



git-svn-id: https://svn.blender.org/svnroot/bf-blender/trunk/blender@53508 954f8c5b-7b00-dc11-b283-0030488c597c