Bug 867582 - Make the Axis overscroll correction use floats for more correctness. r=ajones
 Bug 867964 - Build fail with DenormalDisabler.h:116: error: 'FLT_MIN' was not declared in this scope. r=ehsan

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extra : rebase_source : 7076471a442c3ce639b81259e824edd0c1a69eb0