Changes from SAMBA_2_2:

Changes from SAMBA_2_2:
    source/rpc_server/srv_spoolss_nt.c
    source/rpc_server/srv_spoolss.c
    source/include/proto.h
        - correct checking of access_required in openprinterex as talked
          with John R. and Jerry.
          You can only do server stuff (adding printers, changing forms,
          ..) if you're root or if user is in printer admin list.
          Printers options are grayed if you don't have the
          PRINTER_ADMINISTER flag in the secdesc.