Communication from the Commission to the European Parliament pursuant to the second subparagraph of Article 251 (2) of the EC Treaty concerning the common position of the Council on the adoption of a Directive of the European Parliament and of the Council concerning common rules for the internal market in electricity and repealing Directive 96/92/EC and concerning the common position of the Council on the adoption of a Directive of the European Parliament and of the Council concerning common rules for the internal market in natural gas and repealing Directive 98/30/EC