New iSCSI stack.

[Edward Tomasz Napierała]

Hello.  At http://people.freebsd.org/~trasz/cfiscsi-20130904.diff you'll find 
a patch which adds the new iSCSI initiator and target, against 10-CURRENT.  
To use the new initiator, start with "man iscsictl".  For the target - "man 
ctld".

All feedback is welcome.  If nothing unexpected comes up, I'll commit it 
in a few days from now.  Note that it's still not optimized; at this point 
I'm focusing more on reliability and interoperability.

This work is being sponsored by FreeBSD Foundation.