handle_monster_shouts() was using "seen" type shouts for monsters based

only on their visibility, ingoring if they were in LOS or not.

git-svn-id: https://crawl-ref.svn.sourceforge.net/svnroot/crawl-ref/trunk@5495 c06c8d41-db1a-0410-9941-cceddc491573

Created by  zelgadis  on June 6, 2008
PIWCQQ4A3SZPWPHWO4HTOAC6NSBP6SUCQKOBCZEGCF6BTMM2HA2QC
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