Fix bug of handling signal terminated tests. Bug: 17589740 Bug: 18951146 Change-Id: I4803382b26cd5454693090202b3ba38e3dbe66e5
1. option to run each test in a separate forked process: "--isolate". 2. warnings about slow tests: "--warnline". 3. run multiple tests at the same time: "-j N". Bug: 17589740 Change-Id: Ife5f4cafec43aa051ad7bd9c9b2b7e2e437db0de