Don't crash when camera restrctions are engaged.
Don't crash when camera restrctions are engaged.

Also has cleanups a some old code that's been disabled for a while.

git-svn-id: d565a5fbffec933846bf643895bf9c245569575b@2868 59b500cc-1b3d-0410-9834-0bbf25fbcc57

youknowone/zxing,youknowone/zxing,youknowone/zxing,youknowone/zxing