Staging

Signed-off-by: Jon Ludlam <jonathan.ludlam@eu.citrix.com>
Revival of vhdd
More staging commits. Now it builds.
Steps towards smapiv2
Now it compiles
Make the IP optional in the host type. Useful for local-only SRs
Add a .gitignore
Add some new smapiv2 functionality
Add set_content_id

Signed-off-by: Jon Ludlam <jonathan.ludlam@eu.citrix.com>
Add vhdd to gitignore
Make scan work, and fix dummy mode
WIP compose - mostly VDI.destroy right now
Exception handler to catch when there's no IP
Use shared memory to communicate between vhdd and tapdisk
Add travis files
Merge pull request #1 from jonludlam/revival

Revival