Proto API for LB request/responses

Removing underscores in CENSUS_API, GRPC_API and GPR_API.

Make C++ alarm class usable and testable

Update protobuf version to v3.0.0-beta-2

Release 0.13 upmerge.

This commit may or may not be a great tradeoff.

Removed outdated mention of AsynchronousService

Fix docker inception for now

Add a dummy reference to prevent unused variable warning if there is …

type

Ruby distribtests on Linux

Fixing Ruby examples.

Bring back gpr

it was not actually even included in the library or the test suite.

Upmerge changes from release-0_13

Pass delete[] explicitely to Nan::NewBuffer.

Stop explicitly supporting Node 0.10 and 0.11

Fix 1 second stall on Windows

Sync java options in example protos

Merge from 0.13 and regen projects.

Conflicts:
	build.yaml
	src/ruby/lib/grpc/version.rb