FR 1818615: modify prayer prompt to stop praying for 'y',

renew prayer for 'r' and cancel prompt for anything else.

git-svn-id: https://crawl-ref.svn.sourceforge.net/svnroot/crawl-ref/trunk@2557 c06c8d41-db1a-0410-9941-cceddc491573

Created by  j-p-e-g  on October 25, 2007
LC2F4F2GVJLI4BJX324IDEHSPMDXPCD4X7APHQC63D7F6UWK5MKAC
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