Fix nasty bug that I introduced in r9012: dungeon generation was relying

on travel, so in those cases travel should know everything about the level. Fixes [2596125] and unbreaks cdo. Sorry about that.

git-svn-id: https://crawl-ref.svn.sourceforge.net/svnroot/crawl-ref/trunk@9071 c06c8d41-db1a-0410-9941-cceddc491573

Created by  haranp  on February 14, 2009
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