have the permission to remove its pid file and socket on exit. Put
these files in the /var/run/dbus directory, owned by
messagebus:messagebus.
Remove the files and directory on package deinstall.
* Make sure the messagebus user and group are created, and block out uid/gid
556 for this
* Delete the dbus.pid file as part of a stop_postcmd (dbus doesn't delete its
own pid file)
* Clean up some bash'isms in the KDE detection configure code
* Make the strtod() Call more 4.X friendly by not passing hex to it