Fix a wizmode bug where placing an altar to your current god would

attempt you to "re-join" your own religion and subsequently crash.

Also, reintroduce debugging check for blood potion descriptions that I'd accidentally removed, and rename static methods in religion.cc.

git-svn-id: https://crawl-ref.svn.sourceforge.net/svnroot/crawl-ref/trunk@4238 c06c8d41-db1a-0410-9941-cceddc491573

Created by  j-p-e-g  on April 15, 2008
P2OYYNPHIBGOLT4CRLNTTIXDN34EU2QCMFQJNLAMUAHQXZTEDPXQC
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