Release fat.0.8.0

This one works under xen (finally)
Add mirage 1.0.1
Update md5
Merge pull request #1409 from samoht/master

Add mirage 1.0.1
Depend on mirage-types >= 0.5.0

Signed-off-by: David Scott <dave.scott@eu.citrix.com>
mirage depends on io-page-{unix,xen}

Signed-off-by: David Scott <dave.scott@eu.citrix.com>
Merge pull request #1410 from djs55/mirage-io-page

mirage depends on io-page-{unix,xen}
Merge pull request #1408 from djs55/fat-again

Release fat.0.8.0