Improve priests' starting weapons. Halflings and kobolds get +1/+1

knives, elves and merfolk get quarterstaves, and everyone else gets maces as before. Update the manual to account for this, as well.

git-svn-id: https://crawl-ref.svn.sourceforge.net/svnroot/crawl-ref/trunk@4173 c06c8d41-db1a-0410-9941-cceddc491573

Created by  dolorous  on April 10, 2008
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