Bug 671199 - Don't allow other to write to rundir
    
    The persmissions on /var/run/dirsrv currently get set to 777 by
    the setup program.  There were some discrepencies with the way the
    changeOwnerMode subroutine is used  that cause 777 to be the mode
    set when we intended for it to be 770.  This patch fixes up the
    way changeOwnerMode is used to sllow one to reset the group
    ownership without altering the permissions for other.
    
    In addition, this patch makes an upgrade remove any permissions that
    are set for other on the rundir.