2.20.2 Stuff:

- Fix bugs that were causing XDMCP to not work properly.  (Robert
  Nelson and Brian Cameron)

- Fix so that XDMCP configuration options are read from the 
  configuration file.  (Andrew Ziem)

- Fix bug with gdmXnestchooser where it wasn't starting Xephyr with
  the correct arguments.  (Andrew Ziem)

- Fix so that GDM allows setting of LC_TYPE without setting LANG.
  (Sjoerd Simons and Takao Fujiwara)

- Icon imporvements.  (Luca Ferretti)

- Fix leaks.  (Andrew Ziem)