Opinion of the Economic and Social Committee on the ‘Proposal for a Council Regulation on the implementation of the rules on competition laid down in Articles 81 and 82 of the Treaty and amending Regulations (EEC) No. 1017/68, (EEC) No. 2988/74, (EEC) No. 4056/86 and (EEC) No. 3975/87 (‘Regulation implementing Articles 81 and 82 of the Treaty’)’