Linux burn-in tests

• http://www.phoronix.com/scan.php?page=news_item&px=MTg4MjY

Example for 4 conc 120min testing stressing mem/cpu/gpu hard

TOTAL_LOOP_TIME=120 PTS_CONCURRENT_TEST_RUNS=4 phoronix-test-suite stress-run hpcc build-linux-kernel c-ray unigine-valley fio encode-flac