Don't apply god conducts in monster_die() while in arena mode. In partiuclar,

this prevents TSO from smiting the player when the friendly faction kills an angel or daeva.

Assert in god_speaks() and did_god_conduct() if called during arena mode.

git-svn-id: https://crawl-ref.svn.sourceforge.net/svnroot/crawl-ref/trunk@8105 c06c8d41-db1a-0410-9941-cceddc491573

Created by  zelgadis  on January 2, 2009
CSG3JFGXP6JM24SVDIYGJWSTY3UEHHX7EM5D5QOL2YYGX7FEOFUAC
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