Itseez/opencv — pull request #2094 by SpecLad (2013-12-30 14:17:17+00:00)
Title: Fix MinGW build by declaring the minimal required Windows version

Also deleted miscellaneous remaining multimon cruft.
Deleted `#include `, because `` includes it already.

This should have a nice side effect of preventing us from accidentally using any Windows API that's too new.