BRUSSELS (Reuters) - Europe must launch a daring modernisation drive to reverse its relative economic decline and safeguard the continent's culture of social welfare, the EU's executive said in a strategy paper unveiled on Wednesday. "We must release Europe's enormous untapped potential," European Commission President Jose Manuel Barroso said in a statement released as he spelt out his 2005-2009 game plan to the European Parliament. "I believe that we must embark on a process of transformation as bold and as courageous as the single market in 1985, the launch of the single currency or the unprecedented enlargement of the European...