THE battle has been joined. And the murmurs of resentment among politicians who feel that they, as a class, have been at the receiving end of public and judicial opprobrium have now found an outlet. Its latest manifestation was an officially sponsored all-party meeting in Delhi on November 28 attended, among others, by Sharad Yadav, Sharad Pawar, A.B. Vajpayee, Chandra Shekhar and Somnath Chatterjee. Cutting across party lines, the MPs agreed in principle that the Government must "clarify" the definition of public servantwhether members of Parliament and state legislatures were classified as such.