Merge branch 'release-0_11' of github.com:grpc/grpc into insert-branch-name

src/core/census/grpc_filter.c

src/core/transport/chttp2_transport.c

src/objective-c/GRPCClient/GRPCCall.h

src/objective-c/GRPCClient/GRPCCall.m

src/objective-c/GRPCClient/private/GRPCRequestHeaders.h

src/objective-c/GRPCClient/private/GRPCRequestHeaders.m

src/objective-c/GRPCClient/private/GRPCWrappedCall.h

src/objective-c/GRPCClient/private/GRPCWrappedCall.m

src/objective-c/GRPCClient/private/NSDictionary+GRPC.m

src/objective-c/GRPCClient/private/NSError+GRPC.h

src/objective-c/ProtoRPC/ProtoRPC.m

src/objective-c/examples/RemoteTestClient/RemoteTest.podspec

src/objective-c/examples/SwiftSample/Bridging-Header.h

src/objective-c/examples/SwiftSample/Podfile

src/objective-c/examples/SwiftSample/ViewController.swift

tools/distpackages/.gitignore

tools/distpackages/build_deb_packages.sh

tools/distpackages/templates/libgrpc-dev/DEBIAN/control

...plates/libgrpc-dev/usr/share/doc/libgrpc-dev/changelog.gz

...templates/libgrpc-dev/usr/share/doc/libgrpc-dev/copyright