* Smooth Saudi transition positive for the region * European Central Bank easing boosts global emerging markets * Abu Dhabi's FGB jumps ahead of Q4 results * Dubai property sector slides after Deyaar's poor earnings * But Dubai Islamic Bank rises on profit, dividend surprise By Olzhas Auyezov DUBAI, Jan 25 (Reuters) - Stock markets in the United Arab Emirates and Qatar were mixed in low-volume trade on Sunday as most countries in the Middle East closed their bourses following the death of Saudi Arabia's King Abdullah. ...