Math: proper fuzzy-compare for std::pair<float, float>.
Math: proper fuzzy-compare for std::pair<float, float>.

I should update TestSuite to handle this automagically.

MiUishadow/magnum,MiUishadow/magnum,MiUishadow/magnum,MiUishadow/magnum,MiUishadow/magnum,MiUishadow/magnum