Fix 2488357: ability beams not getting their ranges set.

I chose ranges more or less arbitrarily; better suggestions welcome.

git-svn-id: https://crawl-ref.svn.sourceforge.net/svnroot/crawl-ref/trunk@8301 c06c8d41-db1a-0410-9941-cceddc491573

Created by  haranp  on January 7, 2009
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