Since a new player might not think to pick up a corpse, make TUT_SEEN_CARRION

fire when a corpse is first seen, rather than when one is first picked up.

git-svn-id: https://crawl-ref.svn.sourceforge.net/svnroot/crawl-ref/trunk@5289 c06c8d41-db1a-0410-9941-cceddc491573

Created by  zelgadis  on May 27, 2008
5HF63O5IRRERI2V3SZEDHUNFHUF2B4RSVWQR6C6DR5JF5UYSROWAC
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