[Merge] lp:~brandontschaefer/libsdl/enable-mir-support-ffe into lp:ubuntu/libsdl2

[Dmitry Shachnev]

Marking as Work in Progress as it "needs FFe approval first".
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https://code.launchpad.net/~brandontschaefer/libsdl/enable-mir-support-ffe/+merge/212072
Your team Ubuntu branches is requested to review the proposed merge of lp:~brandontschaefer/libsdl/enable-mir-support-ffe into lp:ubuntu/libsdl2.