Expand the rarest possible (5%) blessings for TSO and Beogh, for when

branding a monster's weapon with holy wrath and promoting an orc to an orc priest fail. TSO can now brand a monster's armor with positive energy, and Beogh can now brand a monster's weapon with electrocution.

git-svn-id: https://crawl-ref.svn.sourceforge.net/svnroot/crawl-ref/trunk@4507 c06c8d41-db1a-0410-9941-cceddc491573

Created by  dolorous  on April 22, 2008
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