Retrieve received session tickets
Retrieve received session tickets

The tickets aren't used yet. Making the handshake hook function work
requires a little rearrangement: GnuTLS supports only one handshake
hook function on a session, so the early SNI hook must be enabled only
on server session, and the new ticket hook only on client (proxy)
sessions.

airtower-luna/mod_gnutls,airtower-luna/mod_gnutls,airtower-luna/mod_gnutls