man.1: Add missing section.
in6pcb: Properly hold port token for in6_pcbbind() and in6_pcbsetport()
inpcb: in_pcblookup_local() must have been protected by port token
in6pcb: in6_pcblookup_local() must have been protected by port token
inpcb/in6pcb: in_pcbinsporthash() never fails
inpcb: in_pcblookup_addrport -> in_pcblookup_localremote

Compared w/ in_pcblookup_local, in_pcblookup_addrport checks remote
address and port (faddr,fport) too.  Renaming it to
in_pcblookup_localremote to be consistent w/ in_pcblookup_local name.

No functional changes.
in_pcbconn_bind: Change argument name from 'nam' to 'remote'

Increase readability.
inpcb: in_pcbconn_bind -> in_pcbsetlport_remote; no functional change.