Well-known senior writer, intellect and journalist Prof. H.L. Keshavamurthy (78) passed away here yesterday following a brief illness. He leaves behind his wife Jayavani, brother-in-law G.B. Shivakumar, a former MLA and a host of relatives and friends. His only son Praveen had pre-deceased him about 15 years ago. Prof. H.L. Keshavamurthy, who was popularly known…