From Yarn: Fixes interface graphics scaling issues. If, for some reason, you want to have the interface graphics stretched, use the -stretch_menu commandline flag.

git-svn-id: svn://svn.icculus.org/fs2open@10544 387891d4-d844-0410-90c0-e4c51a9137d3
Fix a crash with invalid iterators

git-svn-id: svn://svn.icculus.org/fs2open@10545 387891d4-d844-0410-90c0-e4c51a9137d3