Tweak Xom's amusement levels for several mutations.

git-svn-id: https://crawl-ref.svn.sourceforge.net/svnroot/crawl-ref/trunk@4603 c06c8d41-db1a-0410-9941-cceddc491573

Created by  dolorous  on April 24, 2008
62DV3QQRD57QGSWULAN2FNJ2AJA5NHHSURPIZJ5RJXU3QX2B76TQC
Change contents