Benchmark on new hard and software
Benchmark on new hard and software

Redo benchmarks with a new software baseline setup and new hardware.
The previous benchmarks were getting a bit seasoned.

The previous hw was an Intel Core i5 760 at 2.8 GHz,
while the new is a Core i7 5820 at 3.3 GHz.

Also update to run on a recent protobuf version, and update
tooling version information.

olgeni/gpb,mmmries/gpb