* TSX falls 33.79 pts, or 0.29 pct, to 11,464.08 * RIM falls 3.5 pct after latest board shuffle * Markets jittery ahead of Greek elections By Cameron French TORONTO, June 14 (Reuters) - Canada's main stock index fell broadly on Thursday as investors took a cautious approach ahead of Sunday's Greek election, and sold tech shares after Research In Motion's latest board shuffle. U.S. stocks jumped after news major central banks are preparing coordinated action if the result