When going back to one level from another, make all pacified monsters on

it leave the level. Currently, this happens instantly, although there should probably be a time limit added.

git-svn-id: https://crawl-ref.svn.sourceforge.net/svnroot/crawl-ref/trunk@6027 c06c8d41-db1a-0410-9941-cceddc491573

Created by  dolorous  on June 20, 2008
BMZK7EPYNL2TBAQ7AWEJD466B4LI3RBPDXAIZCKBKJRIWOW7DCOAC
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