2.13.0.8 stuff:

- Because the main gdm.conf file is now read-only, contains distro
 defaults and is not to be edited by the user, the file has been
 moved to ${datadir}/gdm/defaults.conf (also factory-gdm.conf is
 now %{datadir}/gdm/factory-defaults.conf).  Users can use the
 --with-defaults-conf to specify the location of this file.
 Note that this means that distributions who want to preserve GDM
 configuration set by those using older versions of GDM should use
 preinstall/postinstall scripts to move the /etc/gdm/gdm.conf file
 to /etc/gdm/gdm.conf-custom if the file has been edited (compare
 against /etc/gdm/factory-gdm.conf to see if it has been modified).
 "make install" for GDM does this if building from source.  GDM
 docs updated to reflect this change.

- Lots of performance issues with the GDM sockets connection improved.
 Now the code deals much better with failures, and better debug is
 printed to the log.

- Improved debug logic in GDM slaves so they use common functions.

- Fix gdmdynamic so it supports up to hundreds of displays rather than
 just a dozen or so.  Now gdmdynamic backs off on sending sockets
 commands to the server if it is being flooded with requests.  Added
 new "SERVER_BUSY" sockets command to support this feature and new
 -t and -s command line options so the back-off behavior can be
 tuned, if needed.

- The config logic for the slaves will now return the compiled in
 value if it fails to connect to the server for better behavior.

- gdm-restart, gdm-safe-restart, gdm-stop, and gdm.spec now use
 gdmflexiserver to get config data rather than trying to grep and
 awk the config file directly.

- Fix Xsession script so zenity calls work.

- Lots of improvements to the GDM docs.  Added section about "PAM" in
 Security.  Add comment that +xkb is needed for keyboard gesture
 listeners (accessibility) to work.  Also updated README and
 README.install and moved some information that was in these files
 to the docs.

- Bump MAX_CONNECTIONS from 10 to 15 so that the daemon will accept
 more connections from slaves.  This improves performance when the
 daemon is flooded with requests.

- Fix include statement in daemon/gdmconfig.c to fix compile problem
 on LFS.

- Translation updates (Raphael Higino, Theppitak Karoonboonyanan,
 Priit Laes, Kjartan Maraas, Lukas Novotny, Ankit Patel,
 Josep Puigdemont i Casamaj\303\263, Ignacio Casal Quinteiro,
 Hendrik Richter, Francisco Javier F. Serrador, Clytie Siddall,
 Slobodan D. Sredojevic, Ilkka Tuohela, Vincent van Adrighem,
 Funda Wang, Adam Weinberger)