Tweak the healing blessing for followers. Extra HP are no longer given,

as they're apparently lost upon gaining an experience level, and healing is no longer always full, but randomly between 1/4 of full HP and full HP.

git-svn-id: https://crawl-ref.svn.sourceforge.net/svnroot/crawl-ref/trunk@6803 c06c8d41-db1a-0410-9941-cceddc491573

Created by  dolorous  on August 9, 2008
4J725ZVZ3YVWW4FP2VO5B4KHW6OUKBTIOOPJGMG7CUFFZ3GSSAFAC
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