Validate failures

A batch of testsuite failures this morning - forgotten push to testsuite perhaps? Unexpected failures: perf/should_run T5113 [stat not good enough] (normal) simplCore/should_compile T3717 [stderr mismatch] (optasm) simplCore/should_compile T4908 [stderr mismatch] (optasm) simplCore/should_compile T7360 [stderr mismatch] (optasm) simplCore/should_compile spec-inline [stderr mismatch] (optasm) typecheck/should_compile holes [stderr mismatch] (normal) typecheck/should_compile holes2 [stderr mismatch] (normal) typecheck/should_compile holes3 [stderr mismatch] (normal) Cheers, Simon