- Set __name__ inside the scriptfile runner so python scripts expecting it get it. - Propagate sys.exit error codes so monkeyrunner will actually return those error codes. - Better handle PyExceptions thrown by the script to actually terminate monkeyrunner. - Bubble up installPackage and removePackage error codes so callers can tell if they worked or not. Change-Id: Ia4717b1ad2c9b4cccd607aba00211f2f85dfb412