Merge pull request #20 from avsm/master

add mirage-xen
fix mirage-xen
Merge branch 'master' of github.com:mirage/opam-repo-dev
Conduit merged to trunk

see mirage/mirage#287
restrict mirage-xen to < 4.02.0
update conduit opam
cohttp now merged to master
mirage-http merged to master
update cowabloga after merge
merge tcpip to mirage
merge mirage changes to trunk
vchan: run ./configure

Signed-off-by: David Scott <dave.scott@citrix.com>
Merge pull request #21 from djs55/vchan-configure

vchan: run ./configure
Update opam file for vchan
Fix conduit constraints
Reduce vchan deps; see mirage/ocaml-vchan#53 for corresponding change
Add a virtual conduit-mirage package that pulls in all the depopts

There are now 4 depots for conduit-mirage (dns, vchan, tcpip) and
every upstream package has to specify them.  This package centralised
those with explicit dependencies.
Merge pull request #22 from avsm/reduce-vchan-deps

Reduce vchan deps; see mirage/ocaml-vchan#53 for corresponding change
sync cohttp opam
+github.0.9.0 working version