By Ian Simpson WASHINGTON, Oct 20 (Reuters) - A Saudi inmate with links to al Qaeda will remain at the Guantanamo Bay prison and a second Saudi man has been cleared for transfer home, a U.S. national security panel said on Monday. Muhammed Abd Al Rahman Awn Al-Shamrani, 39, should stay at the U.S. prison in Cuba because he remains a security threat, the Periodic Review Board said in an online posting. The panel took into consideration Shamrani's history as a facilitator and recruiter for al Qaeda and for the Taliban in Saudi Arabia and his frontline fighting in Afghanistan, it said. ...