+xen-block-driver (from #1168)
xen-block-driver: add constraints to reflect the test versions of lwt/cstruct
Add missing xenstore / xenstore_transport constraints

Recommend re-running travis build from #1174

Signed-off-by: David Scott <dave.scott@eu.citrix.com>
Merge pull request #1180 from djs55/xenstore-missing-constraint

Add missing xenstore / xenstore_transport constraints
Merge pull request #1174 from mirage/master

+xen-block-driver.0.2.3
Redirect Travis notification to opam-commits@
Merge pull request #1182 from samoht/master

Redirect Travis notification to opam-commits@
qcheck 0.1.1, with dependency on unix
Merge pull request #1183 from c-cube/master

qcheck 0.1.1, with dependency on unix
Travis: add IRC notification and let 3.12.1/1.0.0 fail for now
Merge pull request #1184 from mirage/master

Travis: add IRC notification and let 3.12.1/1.0.0 fail for now