Rename session_socket_blockmode() to session_socket_nonblockmode(),
removing its second parameter and the enum() that provided the
values for said parameter.
The function was only called with the second parameter set to one
value (BM_NONBLOCKING) from the enum(). So just do the right thing.
Similar to changes made in smtpd.
While here remove the pointless third parameter from the fcntl(F_GETFL)
call.
No functional change.
ok guenther@ bcook@ deraadt@