Add conducts for undead slaves' killing undead and demons. Currently,

the only difference between these and the conducts for servants' killing undead and demons are the messages ("slaves' kills" vs. "collateral kills").

git-svn-id: https://crawl-ref.svn.sourceforge.net/svnroot/crawl-ref/trunk@9288 c06c8d41-db1a-0410-9941-cceddc491573

Created by  dolorous  on February 28, 2009
UA7TWR6TJ7NAUQ5J7APBTBQW3PV6ZAAD7D7HCTJT3CGMW6JIEIVQC
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