Fix tsan race

Merged some codes to the common function for maintainability in time.c file

Master is now 1.1.0-dev.

Flagging master as 1.0.0-pre1.

Implemented python status_code_and_message interop test

Updated exit_test for new grpc.Server API

Updated python qps tests to use GA server API

Upmerge from 0.15 to master.

This should have been included as part of
45c0f2b3

Conflicts:
	Makefile
	build.yaml
	gRPC-Core.podspec
	gRPC.podspec
	package.json
	package.xml
	src/core/lib/surface/version.c
	src/csharp/Grpc.Auth/project.json
	src/csharp/Grpc.Core/VersionInfo.cs
	src/csharp/Grpc.Core/project.json
	src/csharp/Grpc.HealthCheck/project.json
	src/csharp/build_packages.bat
	src/node/tools/package.json
	src/python/grpcio/grpc/__init__.py
	src/python/grpcio/grpc_version.py
	src/python/grpcio_tests/tests/unit/_rpc_test.py
	src/ruby/lib/grpc/version.rb
	src/ruby/tools/version.rb
	templates/gRPC.podspec.template
	tools/distrib/python/grpcio_tools/grpc_version.py
	tools/doxygen/Doxyfile.c++
	tools/doxygen/Doxyfile.c++.internal
	tools/doxygen/Doxyfile.core
	tools/doxygen/Doxyfile.core.internal
	tools/run_tests/port_server.py

Upmerge 0.14 -> 0.15

Make it more likely to correctly report deadline exceeded

Fix make errors on mac 

Hold onto the GIL in __dealloc__ functions

This should have been part of a6b2a5a0

Conflicts:
	gRPC.podspec
	src/objective-c/BoringSSL.podspec
	src/objective-c/examples/RemoteTestClient/RemoteTest.podspec
	src/objective-c/examples/Sample/Sample.xcodeproj/project.pbxproj
	src/objective-c/examples/SwiftSample/SwiftSample.xcodeproj/project.pbxproj
	src/objective-c/tests/Podfile
	templates/gRPC.podspec.template
	third_party/protobuf

Compression Cookbook

Updated composer.json template

Remove gmock protobuf dependency from cmake build

When a child thread triggers __dealloc__ as part of a thread being
joined, the thread is already considered to be "joined", and so
releasing the GIL can allow the main thread to proceed to exit,
which introduces shutdown race conditions/memory leaks.

Remove unused file

PHP: update composer.json 

PHP: remove gpr_log debug

fixes #7259

Added timeout to port server