Socket related stuff - patch available for testing

[Thomas Nikolajsen]

I have tested patch for some days, and was going to write that I see no issues,
when I got a panic (consistent): 'ssh localhost' panics immediately.

kgdb doesn't show panic message when kernel & core dump loaded;
will upload to leaf if it is of any use.

SMP kernel used, with HEAD from today.

 -thomas
-
panic: assertion: port=&curthread->td_msgport in syncache socket