Added two socketpair(2) regression tests.

Sponsored by:	 EMC / Isilon storage division
Let procfs.sh be less verbose and added two procfs scenarios.

Sponsored by:	 EMC / Isilon storage division
Tune scenario to create more load.

Sponsored by:	 EMC / Isilon storage division
Added description of problem fount with this scenario.
Fixed error and made cleaning up more safe.
Expanded comment a bit.

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

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

Sponsored by:	 EMC / Isilon storage division
Added new regression test, fixed trailing blanks in old tests.

Sponsored by:	 EMC / Isilon storage division