Fixed bad grammar on shield block messages in melee.

Split up Abyss/Pan/Labyrinth save files. The only practical use right now is to be able to correctly place Abyss and Pan ghosts.

git-svn-id: https://crawl-ref.svn.sourceforge.net/svnroot/crawl-ref/trunk@1295 c06c8d41-db1a-0410-9941-cceddc491573

Created by  dshaligram  on April 13, 2007
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