* TSX ends up 95.52 points, or 0.8 pct, at 11,497.30 * Gold miners, oil and gas firms lead gains * Bombardier Inc rises 6 pct on jet deal * Markets nervous ahead of Greek election By Jon Cook TORONTO, June 12 (Reuters) - Canadian stocks posted their first gain in four sessions o n T uesday as gold mining and energy shares rallied and a windfall deal for Bombardier Inc offset concerns about Europe's lingering debt crisis. Stocks on world markets edged higher as battere