Make berserking and non-living monsters stop retreating from Sanctuary as

soon as they leave it, since they're being forced out rather than actually afraid. Also give a "stops retreating" message for them instead of the "regaining courage" one.

Remove faulty logic that was causing monsters to not notice the player as soon as they stopped fleeing Sanctuary.

git-svn-id: https://crawl-ref.svn.sourceforge.net/svnroot/crawl-ref/trunk@6320 c06c8d41-db1a-0410-9941-cceddc491573

Created by  zelgadis  on July 1, 2008
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