CYCLE PREMIERE: Because Survivor tends to turn out two editions per year, its competitions are more technically cycles than seasons. But as CBS is describing the granddaddy of reality competition shows, Survivor is now on Season 34 – and has been cranking out variations on its outplay-outwit-outlast theme since the year 2000. Tonight’s new cycle is set in the Mamanuca Islands, and the Game Changers in the titles are, like this game’s All-Stars, previous Survivor competitors, returning for another run. And jump. And swim, and everything else.