libcli/named_pipe_auth Change from 'info3' to auth_session_info_transport

libcli/named_pipe_auth Change from 'info3' to auth_session_info_transport

This changes the structure being used to convey the current user state
from the netlogon-derived 'netr_SamInfo3' structure to a purpose-built
structure that matches the internals of the Samba auth subsystem and
contains the final group list, as well as the final privilege set and
session key.

These previously had to be re-created on the server side of the pipe
each time.

Andrew Bartlett

Signed-off-by: Andrew Tridgell <tridge@samba.org>