LONDON (Reuters) - Veteran pop star Sir Cliff Richard, flamboyant singer Boy George and other British musicians plan to release a song to raise money for victims of the devastating Asian tsunami, the tune's composer said. Radio DJ Mike Read wrote the song "Grief Never Grows Old" before the Dec. 26 disaster, but said he was now getting stars on board to release it within weeks. "We've tracked down quite a few people, who have said,'Yes I would love to do a few lines on it,"' Read told Sky News television, adding that Robin Gibb of the Bee Gees and...