THE DALAI LAMA gave Houston Mayor Kathy Whitmire a symbolic white stole on Friday as he arrived for a four-day stop in Houston. "The tradition comes from India," the Dalai Lama told the mayor, as he wrapped the stole around her neck. "The material comes from China and it is used by Tibetans. Therefore, it is a symbol of harmony." . . . THREE ITALIAN SKIERS were killed by avalanches in the Dolomite mountains in northern Italy, authorities reported Saturday . . .