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

[Brandon Schaefer]

I see, that makes much more sense. Sorry! All pushed and tested as well! So now only mir depends will be added iff the correct archs are selected. As well as for the rules, will only enable mir with the correct archs.
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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.