Also allow maxjobs to be tweaked based upon which configs are being run,
to prevent memory starvation.

If not running in forever mode, and a test fails, fail run_tests.py
also.

If running in forever mode and make fails, wait for the next run.

This is a tool for collecting coverage reports from our tests and
combining them with the open-source tool 'lcov'.

At least until they stabilize some.

If openssl has not been built, running parallel make processes causes some problems.
	Change on 2015/01/09 by ctiller <ctiller@google.com>
-------------
Created by MOE: http://code.google.com/p/moe-java
MOE_MIGRATED_REVID=83617340

	Change on 2015/01/07 by ctiller <ctiller@google.com>
-------------
Created by MOE: http://code.google.com/p/moe-java
MOE_MIGRATED_REVID=83451760