Opinion of the Commission pursuant to Article 251(2), third subparagraph, point (c) of the EC Treaty, on the European Parliament's amendments to the Council's common position regarding the proposal for a Directive of the European Parliament and of the Council amending Council Directive 91/440/EEC on the development of the Community's railways and Directive 2001/14/EC of the European Parliament and of the Council on the allocation of railway infrastructure capacity and the levying of charges for the use of railway infrastructure amending the proposal of the Commission pursuant to Article 250 (2) of the EC Treaty