Fix 2085598: Nemelex won't be disappointed if there are invisible monsters

nearby when drawing from Destruction, even if you can't see them. Xom can now act on creatures you can't see.

git-svn-id: https://crawl-ref.svn.sourceforge.net/svnroot/crawl-ref/trunk@6960 c06c8d41-db1a-0410-9941-cceddc491573

Created by  haranp  on September 21, 2008
ZR4ALQ5F2ETOD3GXMBYXSN6P75DPDGI3C275A7W5XHYI5TGPHNUQC
Change contents