TOKYO (Reuters) - Shareholders of Japan's Lixil Group backed on Tuesday a slate of board candidates supported by the company's ousted chief executive, a move that is likely to be seen as a victory for corporate governance in Japan.Shareholders at the toilet maker's annual general meeting endorsed all eight candidates who had been backed by former Chief Executive Kinya Seto, including Seto himself, a Lixil spokeswoman said. Seto's ouster as chief executive last year sparked a governance crisis at..