A PIECE FROM HISTORY By Deepak Parvatiyar An analogy is being drawn between the 1996 Shankarsinh Vaghela episode of Gujarat and the present political situation in Karnataka. As a journalist who covered the Gujarat episode then, I do watch the Karnataka scene with interest. Much has already been said about the present Karnataka governor Vajubhai Vala and Janata Dal Secular patriarch HD Deve Gowda now. It is being said that Vala has now paid Gowda back in his own coin by denying the Congress-JD(S) combine an opportunity to form the government. I recall in 1996 Vala was the Gujarat BJP president as well as the state finance minister while Gowda was the Prime Minister. Those were the days of political turmoil. Particularly in Gujarat, it was the BJP rebel Shankarsinh Vaghela, who had virtually split the BJP into two camps. His successful first revolt in 1995 had resulted in the ouster of the then Chief Minister Keshubhai Patel. He was replaced by BJP's Suresh Mehta. Part of th