Fix handling of certain special-case mutations (e.g. frailty) so that

they amuse Xom properly.

git-svn-id: https://crawl-ref.svn.sourceforge.net/svnroot/crawl-ref/trunk@4688 c06c8d41-db1a-0410-9941-cceddc491573

Created by  dolorous  on April 26, 2008
4PJLE5SRBVGBVEKGZZIKGYZH6VJ3JBWJMNGVOIDXT3QG7M6OB2SAC
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