xen: generate a main.xl during configure

Note we don't configure block or network devices. To compensate we
add some examples and documentation links to the config file.
Merge pull request #154 from djs55/add-xen

xen: generate a main.xl during configure
Update CHANGES
Merge pull request #155 from djs55/add-xen

Update CHANGES
The HTTP dependency now also installs `mirage-tcp-*`.

Otherwise we get a dependency failure as cohttp doesnt compile
the Mirage backends.
bump to 1.0.3 working version
Merge pull request #158 from avsm/master

Fix HTTP/cohttp dependencies in autoinstall
Always call ocamlbuild on every `make` by declaring the main target PHONY.

Closes mirage/mirage#150
Merge pull request #159 from avsm/master

Always call ocamlbuild on every `make` by declaring the main target PHON...
Support `Fat_KV_RO` (a read-only k/v version of the FAT filesystem).

This requires mirage/ocaml-fat#20 to be merged first.
The `KV_RO` filesystem in Unix now passes through to the underlying filesystem instead of calling `crunch`

This requires mirage/mirage-fs-unix to be installed.
Merge pull request #160 from avsm/master

Support `Fat_KV_RO` (a read-only k/v version of the FAT filesystem).