TODO:

- use libtool/automake
- the nasty "first_gid" should become trick a compilation option
  so gid should be in user table instead of being set to a default value
- implement the other NSS services
- maybe change the configuration files format (is it necessary ??)
- implement a kind of persitent connections
  (that means sharing a limited number of MySQL connections between
  all processes, yes we need semaphores and shared memory)
- Make the library completely thread safe
- add _lots_ of comments
- implement better shadow support (add expire, inact, warn etc.)
- most current compilation options should be turned into configuration
  options.

(feel free to add stuff here)
