Extend test time.

Sponsored by:	EMC / Isilon storage division
No need to use tunefs. Use file system check defined in default.cfg.

Sponsored by:	EMC / Isilon storage division
thr_new(2) is known to fail on versions older that 8.4-STABLE.
Add unused (custom) syscall to the ignore list.

Sponsored by:	EMC / Isilon storage division
Some old improvements to the scenario, from when snapshots were enabled for
SU+J.

Sponsored by:	EMC / Isilon storage division
Old improvements to SU+J snapshot scenarios.

Sponsored by:	EMC / Isilon storage division
Added a timeout to this scenario and a failure notification.

Sponsored by:	EMC / Isilon storage division
Added a regression test.

Sponsored by:	EMC / Isilon storage division
Fix wrong error check.

Sponsored by:	EMC / Isilon storage division
Added new SU+J test scenario.

Sponsored by:	EMC / Isilon storage division
Missed a kill of looping process.

Sponsored by:	EMC / Isilon storage division
Added two fifo regression tests.

Sponsored by:	EMC / Isilon storage division
Limit run time and be less verbose.

Sponsored by:	EMC / Isilon storage division
Improved error reporting a bit.

Sponsored by:	EMC / Isilon storage division