Miscellaneous minor fixes and cleanups (such as using player_can_smell()

more and mprf() rather than strcats.)

git-svn-id: https://crawl-ref.svn.sourceforge.net/svnroot/crawl-ref/trunk@547 c06c8d41-db1a-0410-9941-cceddc491573

Created by  haranp  on December 3, 2006
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