Fixes to compile with Visual C++. Moved direct.cc and direct.h to directn.* to avoid conflict with VC++ direct.h header.

git-svn-id: https://crawl-ref.svn.sourceforge.net/svnroot/crawl-ref/trunk@4390 c06c8d41-db1a-0410-9941-cceddc491573

Created by  dshaligram  on April 19, 2008
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