MIDEAST STOCKS-Saudi drops after MSCI disappointment; Egypt sinks

* MSCI decides not to consider Saudi for emerging market status * Inclusion in index now unlikely before mid-2018 or 2019 * Rest of Gulf swayed by weak oil, global bourses * Dubai's Deyaar bucks trend, rises in heavy trade * Orascom Telecom regulatory debacle still weighs on Egypt By Andrew Torchia DUBAI, June 15 (Reuters) - Saudi Arabia's stock market led falls in the Gulf on Wednesday after MSCI decided not to consider the country for emerging market status, while Egypt fell sharply as blue ch