Also mark the amulet of the gourmand as useless if we have the gourmand

mutation.

git-svn-id: https://crawl-ref.svn.sourceforge.net/svnroot/crawl-ref/trunk@10100 c06c8d41-db1a-0410-9941-cceddc491573

Created by  dolorous  on July 5, 2009
KIYOPNTGRZSI5POLYKOBORH2CXABCFUOI2AFHUDGA3W7DY65KC3QC
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