Actors are now always visible to themselves. If an actor should behave

differently if it is invisble yet can't see invisible then that will have to be be special cased, rather than using can_see() or visible_to().

git-svn-id: https://crawl-ref.svn.sourceforge.net/svnroot/crawl-ref/trunk@8541 c06c8d41-db1a-0410-9941-cceddc491573

Created by  zelgadis  on January 18, 2009
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