-complete: All existing background subscriptions need to pass in "phase"
https://github.com/openpeer/op-stack-cpp/issues/56

- started: Introduce chained backgrounding subscriptions
https://github.com/openpeer/op-services-cpp/issues/29

- added: Each backgrounding subscriber should use a setting for attached phase
https://github.com/openpeer/op/issues/70

- added: Proxy subscription mechanism needs to be extended to support sending subscription object in delegate callback
https://github.com/openpeer/op/issues/71
- Introduce chained backgrounding subscriptions
https://github.com/openpeer/op-services-cpp/issues/29
- Each backgrounding phase needs an optional timeout setting
https://github.com/openpeer/op-services-cpp/issues/33
- merged 20140307-dev-stable into feature-20140314-push-before-backgrounding
- merge compile error fix
- fix: finished testing and fixing phased backgrounding
https://github.com/openpeer/op/issues/73
- wrap all of services::backgrounding in core layer
https://github.com/openpeer/op-core-cpp/issues/12
Merge branch '20140307-dev-stable' into feature-20140314-push-before-backgrounding

* 20140307-dev-stable:
  - Allow selection of subsystem in logging to debugging life easier when dealing with media https://github.com/openpeer/op/issues/78
  - fix: LockedValue doesn't need to use full recusrive lock since it's a getter/setter pattern only https://github.com/openpeer/op-core-cpp/issues/14
- notification that application will quit and blocking until thread shutdown is processed
https://github.com/openpeer/op-services-cpp/issues/34