Portal vault entries now show up on the overmap. Breaks savefile

compatabilty.

git-svn-id: https://crawl-ref.svn.sourceforge.net/svnroot/crawl-ref/trunk@7583 c06c8d41-db1a-0410-9941-cceddc491573

Created by  zelgadis  on November 24, 2008
4VDKJOSBXI4KTWFJT4KWRF6EAQYQEXHJORP3L7RTDJXAYTKQELNAC
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