[glib-networking] (12 commits) ...gnutls: support TLS 1.3 session resumption client-side

[Michael Catanzaro <mcatanzaro src gnome org>]

Summary of changes:

  3e2465d... gnutls: fix session data leak (*)
  ce58eb5... Always call complete_handshake() even if handshake failed (*)
  da1123d... tests: simplify meson.build a bit (*)
  2b4c043... tests: Be less strict when checking client close errors (*)
  9f089fe... Fix flakiness in test_connection_read_time_out_write() (*)
  ab80ee3... Disable session resumption when running tests (*)
  684d87b... Improve reliability of unclean disconnection test (*)
  061a30c... Improve reliability of client auth failure tests (*)
  addb8e1... Run connection tests under TLS 1.2 (*)
  e77be66... gnutls: remove server support for session ID storage (*)
  25c854f... gnutls: use monotonic time for the session cache (*)
  3dbc081... gnutls: support TLS 1.3 session resumption client-side (*)

(*) This commit already existed in another branch; no separate mail sent