Add UTF-8 BOM to help keep contributor names from becoming mojibake.

Good? No good?

git-svn-id: https://crawl-ref.svn.sourceforge.net/svnroot/crawl-ref/trunk@3786 c06c8d41-db1a-0410-9941-cceddc491573

Created by  pauldubois  on March 21, 2008
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