The font smoothing helper in particular now takes into account whether
or not we're dealing with color glyphs, in which case we shouldn't (or
don't need to) smooth, and also makes sure the QFont::NoSubpixelAntialias
style strategy doesn't affect font smoothing when we're dealing with
non-subpixel-antialiased font smoothing, as on macOS 10.14.
Change-Id: Ibd477158629402c55cafec31576b6d9901d184cf
Reviewed-by: Lars Knoll <lars.knoll@qt.io>
Reviewed-by: Allan Sandfeld Jensen <allan.jensen@qt.io>
ec254d2555