Started virtdb package as a module of meta-client.
Fixing initial endpoint request.
Added first draft of virtdb module.
Merge remote-tracking branch 'upstream/master'
Changed code to follow change of proto location.
Serving metadata through VirtDB module.
Added column interface to VirtDB connector. Some refactoring needed.
Refactoring a bit.
Merge pull request #38 from szilardhuber/master

Introduced VirtDB module with Svc Config connect and Metadata server functionalities