WHAT'S in a name? Apparently a lot, when it comes to the streets of Calcutta. The bustling metropolis may be saddled with some of the country's most poorly maintained roads, but they get new names all the time. All in the name of maintaining the city's hoary tradition, wiping out the remaining colonial vestiges and paying tribute to freedom fighters, eminent denizens, and the ideologically friendly international leader, writer or poet.