Implement handling of 'UCI_Variant' option for variant announcement and selection\r
Pass 'info string variant' line as 'setup' command to allow engine-defined variants\r
Set 'UCI_Opponent' option in accordance with CECP 'name' and 'computer' commands\r
+Fix option setting during analysis (MultiPV!)\r
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22/11/2016 2.2\r
Use USI gameover command to relay game result\r