Differentiate intrinsically safe monsters and ones which the user options

consider safe. Fixes 2430467.

git-svn-id: https://crawl-ref.svn.sourceforge.net/svnroot/crawl-ref/trunk@7838 c06c8d41-db1a-0410-9941-cceddc491573

Created by  haranp  on December 15, 2008
UEZHRKVE25KVD6RRO7IFTTDSPKPM74LSC5I7J6O7ASSKDBQZXEGAC
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