Applied bobbens' patch: you.skills("foo") gets skill level of foo from Lua.

git-svn-id: https://crawl-ref.svn.sourceforge.net/svnroot/crawl-ref/trunk@2721 c06c8d41-db1a-0410-9941-cceddc491573

Created by  dshaligram  on November 2, 2007
LSYZZD7OMBQQQYK2VR2IKNRD2FAEAHQ7ZDKW54AMM5GRTPH4RD3AC
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