For now, allow Xom to give you more than three levels of covering

mutations (e.g. scales) again.

git-svn-id: https://crawl-ref.svn.sourceforge.net/svnroot/crawl-ref/trunk@4683 c06c8d41-db1a-0410-9941-cceddc491573

Created by  dolorous  on April 26, 2008
SJSPGNGW5SOKYOQKW6SZOKS2GHZS3WIQVIXDWTO42A3KOQ25G4TAC
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