Add a Conduit_xenstore which implements the Vchan model
update gitignore
Add vchan tests using the conduit interface
fix conduit.mirage dependencies
Sprinkle a little more debug into the conduit interface
Check for existence of /conduit in Xenstore for vchan coordination

Start adding scaffolding for .install generation
Add PEER.exists to make it easier to check for the validity of a name
update constraint on ipaddr to >=2.5.0 for sexp accessors
Merge branch 'master' of github.com:mirage/ocaml-conduit
Merge branch 'vchan-pure-build'
Add ocamldoc for Conduit_async_ssl
improve info strings in Conduit_async_ssl pipes
Conduit_lwt_unix_ssl: support passing in a custom context
Lift out much of the resolver logic into a structure more suitable for Vchan

Specifically, vchan doesnt have a listen call as sockets do, so we need
to move to a Conduit-based solution for that.  Resolvers now register
vchan uuids to publish them in the namespace upon startup
Merge branch 'master' of github.com:avsm/ocaml-conduit
More fixes of the APIs to better support both forms of vchan
Merge branch 'master' of github.com:avsm/ocaml-conduit
Show more debugging in tests
add a set_service function to the Conduit_resolver interface
Separate the registration of the Conduit_resolver_mirage from init

This permits more freedom in how to construct a resolver in different
contexts as one can be passed in externally