Add core dependencies from xenserver/buildroot

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

Signed-off-by: Jon Ludlam <jonathan.ludlam@citrix.com>
Fix the dependency analysis bit

Signed-off-by: Jon Ludlam <jonathan.ludlam@citrix.com>
Upgrades to core dependencies, add opam, and core works

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