2.6.0.2 stuff:

- Fix PAM braindamage in #119853 and #126984 (Frederic Crozat, me)

- Fix the flexiserver protocol (gdmflexiserver should no longer hang)

- Disable IPv6 by default, it's still kind of problematic, you have
  to explicitly enable it now with --enable-ipv6=yes

- Fix some IPv6 issues, #133246

- Fix message weirdness in the greeters, #123958 (Frederic Crozat, me)

- Set font correctly on theming, #125070 (Muktha, me)

- Translation updates (John C Barstow, Vincent van Adrighem, Christophe Merlet,
  Changwoo Ryu)