First steps to logging to diag service.
Merge pull request #44 from dbeck/master

minor change: renaming testdata service to 'provider'
VirtDB is able to log to diag service and interface is reduced to minimal.
Merge remote-tracking branch 'upstream/master'
Merge pull request #45 from szilardhuber/master

VirtDB interface mimialised + logging to diag service
Changed ellapsed microsec precision from millisec to nanosec.
Merge pull request #46 from szilardhuber/master

Changed ellapsed microsec precision from millisec to nanosec.
picking up submodule changes