CP-20431: MxGPU in Xenops_interface.Vgpu

Broaden the Vgpu.implementation type to include MxGPU implementations.

Signed-off-by: Thomas Sanders <thomas.sanders@citrix.com>
Signed-off-by: Rob Hoes <rob.hoes@citrix.com>

Merge pull request xapi-project#145 from xapi-project/ppx_trunk

 Merge ppx_trunk into master for OCaml 4.02.3 and PPX

Use PPXs where possible

Signed-off-by: Jon Ludlam <jonathan.ludlam@citrix.com>

Remove use of the camlp4 lwt syntax

Signed-off-by: Jon Ludlam <jonathan.ludlam@citrix.com>

Package xenops_types

Signed-off-by: Jon Ludlam <jonathan.ludlam@citrix.com>

Merge pull request xapi-project#136 from gaborigloi/remove_INSTALL

Remove outdated INSTALL file

Merge pull request xapi-project#132 from robhoes/transform

Add v6 interface

[CP-18781] Add device information in VIF.state (xapi-project#131)

Signed-off-by: Marcello Seri <marcello.seri@citrix.com>

Merge pull request xapi-project#129 from lindig/CP-18289

CP-18289 add nomigrate, nested_virt booleans to xenops state

Merge pull request xapi-project#126 from jonludlam/release-1.2.0

Prepare to release 1.2.0