[FIXED] RlvHandler::hasBehaviourExcept() returns FALSE on modifier commands

  -> Example: issue @tplocal:50=n
  -> gRlvHandler.hasBehaviour(RLV_BHVR_TPLOCAL) will return true but gRlvHandler.hasBehaviourExcept(RLV_BHVR_TPLOCAL, LLUUID::null) will return FALSE
  => since it's a modifier command it will be reference counted but that fact is lost on manual matching (tplocal=n != tplocal:<option>=n) so we keep track of reference counting in the command

--HG--
branch : RLVa