Testing for log API. Use new streaming format for log API. Activate log API.
Testing for log API. Use new streaming format for log API. Activate log API. -- missing changes
Merged in mainline. Lots of conflicts. Also fixed latent bug in registry save clode.
Merge branch 'master' of github.com:soundcloud/harpoon into logging-api-http

Conflicts:
	harpoon-agent/api.go
	harpoon-scheduler/registry.go
Review changes per PB.
merge from main
Merge pull request #25 from soundcloud/logging-api-http

agent: logging HTTP API