Fix write buffering, add tests

Add api-fuzzer corpus

Fix test errors

Makefile.template: use import libraries for mingw

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

Merge pull request #44 from soltanmm-google/meta_meta-meta-MUSHROOM-MUSHROOM-Snaaaaakkeeeee-oohhhh-it's-a-snaaaaakkeeeeee

Paper-over Python errors

Use grpc_slice at core boudary

This reads directly off of the slices rather than ref'ing and unref'ing
them. There's likely some silliness w.r.t. interned slices and
references to them outliving their associated call objects, but we are
just ignoring that for now.

add --perf_args usage to jenkins performance runner scripts

Node electron build

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