Add a minor consistency fix: The DID_KILL_NATURAL_EVIL conduct isn't

currently used, but generate it under the right circumstances anyway, since DID_NATURAL_EVIL_KILLED_BY_SERVANT is already generated, and it isn't currently used either.

git-svn-id: https://crawl-ref.svn.sourceforge.net/svnroot/crawl-ref/trunk@2907 c06c8d41-db1a-0410-9941-cceddc491573

Created by  dolorous  on November 24, 2007
NC7EZH4YRVHK635D4KT6JAQWPQH4DUSXZTBR7NDLAMFFDIQSU3ZAC
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