Added David's new Antaeus level.

Dungeon builder was asking for vault-collision checks on minivaults, which could hang the game, fixed.

git-svn-id: https://crawl-ref.svn.sourceforge.net/svnroot/crawl-ref/trunk@938 c06c8d41-db1a-0410-9941-cceddc491573

Created by  dshaligram  on February 8, 2007
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