cc769b14b6
Add some more (unused in core) entries to screenbackgrounds.plist so that OXPs can define slightly different backgrounds for F6 screens and their missionscreen alternates. git-svn-id: http://svn.berlios.de/svnroot/repos/oolite-linux/trunk@5334 127b21dd-08f5-0310-b4b7-95ae10353056