Validate failures

[Simon Marlow]

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