Update setup.py for new build system on Windows
Rename windows directory
Include official cacheinit script, readme
Update gitignore for DLL files
Mention the need for a svn client on Windows
Add conditional definition of PyMPI_MPI_Message and MPI_Message PyMPI_MPI_Message. This is needed for MPI_VERSION<3 and a recent version of mpi4py.

Follows gh-401 https://groups.google.com/d/topic/h5py/Uw5x3BKwJGU/discussion and https://groups.google.com/d/topic/mpi4py/xnDyYvawB-Q/discussion.
Merge pull request #404 from pdebuyl/mpi_message_header

Add conditional definition of PyMPI_MPI_Message and MPI_Message PyMPI_MP...
Update quick.rst

Remove an extraneous trailing period and add a missing 's'.
Merge pull request #405 from bgrant/patch-1

Update quick.rst
Update for pavement-based build support
Merge pull request #377 from andrewcollette/windows

New build standards on Windows