RAMALLAH, West Bank, Jan 5 (Reuters) - He's been a prostitute's rich beau, an officer, a gentleman and a gigolo, but Palestinians can't fathom Richard Gere's latest incarnation as a cheerleader for their elections this weekend. Well known for his vocal support of Tibet's Dalai Lama and celebrated for his captivating good looks, Gere urged Palestinians in a television commercial broadcast ahead of Sunday's poll in the West Bank and Gaza to get out to vote for a new president to succeed Yasser Arafat, who died in November. "Hi, I'm Richard Gere and I'm speaking for the entire world. We're...