iscsi bugfixes

The following patches fixes some regressions and bugs we have had since the driver was created. The bugs include:

1. Sending the wrong error values to userspace.
2. r2t list problems. We should not hit the BUG_ONs anymore.
3. Many abort fixes including handling the case where the session drops in the middle of an abort or if a command finishes and then we get the status.
4. Fix iser oops during session recovery.
5. More memory reduction patches. We should not be able to negotiate for larger maxrecvdatalength values and not be limited by how much memory we can allocate.
6. Fix id leaks
7. Fix allocation from soft irq context bug.

Oops, oh yeah James,

I forgot to add that the patches, if possible, should go into 2.6.18. We finally have all the major data path bugs, we know about at least, fixed with this patchset. The #2 patch, fixes a nasty bug we were hitting with writes and SMP boxes.