xenserver-core: Bump version to 0.10.0

Signed-off-by: Euan Harris <euan.harris@citrix.com>
xenserver-core-latest-snapshot: Point to Akamai download

Signed-off-by: Euan Harris <euan.harris@citrix.com>
Merge pull request #304 from euanh/build-improvements

Bump xenserver-core version to 0.1.0 and point to Akamai download for RPMs