Added doc folder for documentation files.


git-svn-id: svn+ssh://svn.code.sf.net/p/mingw-w64/code/trunk@5 4407c894-4637-0410-b4f5-ada5f102cad1
tree: f6fb9bbff1288f20c03829ccd1b56da80f8d3157
  1. mingw-w64-crt/
  2. mingw-w64-headers/