Apply patch 2789368 to make AltGr work as expected for Tiles.

This has always worked for me on Linux and I've got no way to test it on Windows, so I'll just have to hope it's okay.

git-svn-id: https://crawl-ref.svn.sourceforge.net/svnroot/crawl-ref/trunk@10341 c06c8d41-db1a-0410-9941-cceddc491573

Created by  j-p-e-g  on July 19, 2009
5YW2TFK4HFVP2DKPBWRYRNT72SCSIBWXK6RBVPQGQETHQO3MVGGQC
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