PHP: Prepare for 1.1.0 release

Add licenses to all BUILD files and missing copyright

Fixing a few items with the new Bazel BUILD system

Force client to wait for server to start in memory_usage test

Revert "Revert "Revert "Revert "Remove redundant includes from string.h and tmpfile.h""""

Fix write buffering, add tests

Add api-fuzzer corpus

Makefile.template: use import libraries for mingw

grpc memory usage profiling (call, channel, server creation)

add --perf_args usage to jenkins performance runner scripts

Node electron build

Merge remote-tracking branch 'upstream/master' into revert-9063-revert-8951-revert-8949-revert-8922-slice_cleanup

memory usage profiling for client call, client channel, server creation, server call and server channel.

fix bug. server: snapshot pass by pointer

Make grpc.sln compile

Makefile.template: fixed variables names, and added a missing one

Fix various php bugs

-) Fixing Bazel 0.4.x breakage
-) Adding helloworld BUILD examples
-) Fixing grpc++ missing files.
-) Adding helloworld example as a test for Bazel basic.

Drop support for Node 0.12 and io.js 1.0

PHP: use a macro to specify extension src dir