Implement a hack to differentiate between Ely's self healing and healing

others. I've added a new targetting mode TARG_NOT_SELF that basically just forces the autotargetting to skip the player in favour of the previous target or, failing that, the nearest monster (no matter whether friendly, hostile or neutral). Both types of ability crop up at the same piety point, and the ability letters are changed accordingly (which is likely to wreak havoc on those relying on their finger memory, but makes more sense and is easier to remember in the long run).

I haven't changed/added the ability descriptions. If someone could do that, please?

git-svn-id: https://crawl-ref.svn.sourceforge.net/svnroot/crawl-ref/trunk@9575 c06c8d41-db1a-0410-9941-cceddc491573

Created by  j-p-e-g  on April 3, 2009
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