Brazil’s Senate on Tuesday gave final approval to a landmark reform of the country’s social security system, in a step seen as key to stabilizing public finances and the economy. The text was approved by a vote of 60-19. Earlier in the day the Senate Constitutional and Legal Affairs Committee approved the text of a pension reform bill, while Brazilian markets rallied and stocks hit an all-time high as the government’s key policy this year to revive flagging economic growth was achieved. Pension…