MSAN, TSAN, ASAN need to see all the code. Valgrind, MSAN want -DPURIFY.

 -) Fixing long line length.
 -) Changed the logic of the exit message.

  -) Adding a new command line flag to be able to see which tests are passing.
  -) Adding more status when the tool is idle in forever mode.
  -) Adding a last status when the tool is finished so to avoid leaving the console in a weird state.
  -) Adding a status message in the forever mode if the previous run failed.
  -) Swapped the message and its explanation, so you don't have to scroll up to see which test failed.
  -) Fixed a race condition in the watch_dir.py code if a file is deleted during the loop.

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

- necessary to allow seamless interop testing, as discussed earlier this week.

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.

- adds _grpc_ensure_gcloud_ssh that creates the ~/.ssh/gcloud_compute_engine
  key file if it does not exist

- update all the grpc_** commands that use ssh to call this

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.

Adds a command for triggering a pull of the latest built docker images.
	Change on 2015/01/09 by temiola <temiola@google.com>
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Created by MOE: http://code.google.com/p/moe-java
MOE_MIGRATED_REVID=83641150

	Change on 2015/01/09 by ctiller <ctiller@google.com>
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Created by MOE: http://code.google.com/p/moe-java
MOE_MIGRATED_REVID=83627504

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

	Change on 2015/01/09 by ctiller <ctiller@google.com>
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Created by MOE: http://code.google.com/p/moe-java
MOE_MIGRATED_REVID=83610407

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