Make the tests for icy and skeletal monsters in Lee's Rapid

Deconstruction more generic.

git-svn-id: https://crawl-ref.svn.sourceforge.net/svnroot/crawl-ref/trunk@8050 c06c8d41-db1a-0410-9941-cceddc491573

Created by  dolorous  on December 30, 2008
B4YYKEZVHLGRFAHEP5ATEV4MYRPGXQPWTUXGGG7ITZH3ZGV3VMBQC
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