Apply patch submitted for BR 1945384: friendlies will try to move around the player to get to their target instead of trying to move through the player and ending up doing nothing.
git-svn-id: https://crawl-ref.svn.sourceforge.net/svnroot/crawl-ref/trunk@4334 c06c8d41-db1a-0410-9941-cceddc491573
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