oasis: Add oasis, and its dependencies

Signed-off-by: Euan Harris <euan.harris@citrix.com>
ocaml-fileutils: Move configure call into build step

Calling configure in the setup step means that makedeb runs it
outside the chroot when creating the source deb.   This means
that paths from outside the chroot are captured in the setup
files in the binary, which may cause it not to build inside
the chroot.

Signed-off-by: Euan Harris <euan.harris@citrix.com>
ocaml-qmp: Update to 0.9.2 with 'change' command

Signed-off-by: Euan Harris <euan.harris@citrix.com>
ocaml-qmp: Fix local source reference

Signed-off-by: Euan Harris <euan.harris@citrix.com>
ocaml-stdext: Update to 0.10.0

This removes the Tar module.

Signed-off-by: Euan Harris <euan.harris@citrix.com>
ocaml-nbd: Update to 1.0.2 and spring-clean spec file

ocaml-nbd no longer uses obuild.

Signed-off-by: Euan Harris <euan.harris@citrix.com>
ocaml-mirage-types: Add package and its dependencies

Signed-off-by: Euan Harris <euan.harris@citrix.com>
ocaml-sha: Add package

Signed-off-by: Euan Harris <euan.harris@citrix.com>
vhd-tool, ocaml-vhd: Update to latest versions

Signed-off-by: Euan Harris <euan.harris@citrix.com>
xapi: Update to latest, removing use of stdext's Tar

Signed-off-by: Euan Harris <euan.harris@citrix.com>