SANTIAGO (Reuters) - Five years ago during the closing speeches of a summit in Chile, Spain's king told Venezuelan President Hugo Chavez to "shut up" in an exchange that epitomized the fruitless meetings between Europe and Latin America at the time. Dominated by leftist rhetoric and instability in the Andes, the summits were sideshows to the rapid economic growth in Europe that followed the introduction of the euro a decade ago, and the concerns of Madrid and Brussels lay elsewhere. ...