Fix mimics not teleporting when attacked by reaching or airstrike, and a

few (really) minor adjustments on monster pathfinding.

git-svn-id: https://crawl-ref.svn.sourceforge.net/svnroot/crawl-ref/trunk@5487 c06c8d41-db1a-0410-9941-cceddc491573

Created by  j-p-e-g  on June 5, 2008
NPTVMSNYWIALN2GSKESU6NKX7XNG7QDH2TNIWUB6R6NHCLK32NFAC
Change contents