Merge pull request #1376 from mirage/master

+crunch.1.2.1
Add fat-filesystem.0.6.0
Add mirage-block-unix
Correct a version constraint for fat-filesystem

Signed-off-by: David Scott <dave.scott@eu.citrix.com>
Add mirage-block-xen
Merge pull request #1377 from mirage/master

+mirage-xen.0.9.9 +mirage-unix.0.9.9
Merge pull request #1379 from mirage/master

+mirage-console-*.0.9.9
Merge branch 'add-fat-filesystem' of git://github.com/djs55/opam-repository
mirage-block-unix: fix deps and constraints
fat-filesystem: fix constraints