Fix a bug where 'Unidentified items' would show up as an option for containers with gold inside

git-svn-id: https://svn.code.sf.net/p/unnethack/code/trunk@1639 f1e491ac-5ded-4967-80bf-9f4855be876a
Finish the tetris-shape vault rotations, and add couple others.


git-svn-id: https://svn.code.sf.net/p/unnethack/code/trunk@1640 f1e491ac-5ded-4967-80bf-9f4855be876a