EMERGING MARKETS-Brazilian c.bank intervenes as real slumps; Colombian peso drops on tax reform

* Real cuts losses after two central bank interventions * Colombia announces changes in tax reform * Latin American stocks eye worst day in three months (Updates prices; adds details, news items) By Medha Singh and Uday Sampath Kumar Nov 26 (Reuters) – Brazil’s real slipped in volatile trading on Tuesday to a fresh record low, with the government intervening twice to stymie a slump in the currency, while a change in Colombia’s tax reform raised worries of higher fiscal deficit. The Brazilian central bank said it is selling dollars in the spot currency market for the second time, announcing an auction of another minimum lot $1 million after the real slumped as much as 1.2% to 4.2770 against the dollar.