validate test failures

[Simon Peyton-Jones]

| > Stderr:
| > numsparks001: internal error: ASSERTION FAILED: file rts/Schedule.c, line 1473
| >
| >     (GHC version 7.3.20110809 for x86_64_apple_darwin)
| >     Please report this as a GHC bug:  http://www.haskell.org/ghc/reportabug
| >
| > *** unexpected failure for numsparks001(threaded1)
| 
| (I didn't get that a few days ago.)

This is Duncan.  He's working on it; to quote:

| Mm.
| 	
| I'll see what my extra tracing turns up. I may not have time to look at
| this today. I've got a couple deadlines today.

Maybe turn to expect_broken to avoid discombobulation?

S