Proposal: Improvements to Performance Tracking Infrastructure.

Thanks to Hal for being such a corageous man! :wink:

We should involve Daniel Dumbar, Chris Matthews and Michael Grottesman on
the design and planning of such a suite. Chris is working on getting better
results from the current suite, and his input would be invaluable on such a
task.

As soon as we have a "benchmark mode" for the test-suite, I will setup a
new ARM buildbot to run those and stop sending reports from the old
test-suite bot, and leave it running for validation purposes only.

cheers,
--renato