Added two regresson tests.

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

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

Sponsored by:	 EMC / Isilon storage division
Style fixes.

Sponsored by:	 EMC / Isilon storage division
Added comments.

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

Sponsored by:	 EMC / Isilon storage division
Simplify page stealer cleanup.

Sponsored by:	 EMC / Isilon storage division