Fix non-tile compile of tutorial.cc (whoops!)

Add messages when entering or leaving the level map ('X') in tiles. First attempts at outlining icons via cursor in tile tutorial. (Currently this only works for monsters, though I'm not sure why…)

And some code clean-up for tiles and the tutorial.

git-svn-id: https://crawl-ref.svn.sourceforge.net/svnroot/crawl-ref/trunk@3301 c06c8d41-db1a-0410-9941-cceddc491573

Created by  j-p-e-g  on January 19, 2008
TOOHYAX73C5KPSWGHPCBWCUN62WMMO3BI5CWEEMGV3WBFZ5RIH5AC
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