Add arch files for building on the Cray XCs using the Cray compiler.

Files contributed by Mike Rezny (Met Office).

git-svn-id: http://forge.ipsl.jussieu.fr/ioserver/svn/XIOS/branchs/xios-1.0@582 d613d254-d18a-4304-b296-5125d4c4d670