Bug 668862 - init scripts return wrong error code
    
    The dirsrv init script returns an exit code of 0 when no instances
    are configured or if an invalid instance name is specified.  This
    patch makes the dirsrv init script return the proper exit codes.
    The exit codes for the status action are different than the codes
    for non-status actions per the Fedora SysV init script packaging
    guidelines.
    
    In addition, the dirsrv and dirsrv-snmp inistscripts need to return
    a non-0 exit code when networking is disabled or if the binaries
    do not exist.  This patch handles those cases as well.