* tools/Makefile.am: Patch by Colin Walters that fixes distcheck

* tools/Makefile.am: Patch by Colin Walters that fixes distcheck

* dbus/dbus-userdb.c, dbus/dbus-userdb-util.c: Add patch we have
  had in Red Hat packages for a while but for some reason never
  got merged upstream
  (_dbus_is_a_number): New checks if a string
  can be converted to a number and does the conversion if it can
  (_dbus_user_database_lookup): Add check to see if the given username
  is a udi.  This allows udi's to be used instead of usernames in the
  config file.
  (_dbus_user_database_lookup_group): Add check to see if the given groupname
  is a gdi.  This allows gdi's to be used instead of groupnames in the
  config file.