Comment 15 for bug 1581160

Hinting options are rather font dependent. The old free fonts for CJK usually do not have proper hinting embedded so certain specific tweaks (ex. auto hint) are needed to avoid faint strokes. The draw backs are the spaces between strokes may be significantly changed for small size glyphs. It would not be a good idea to just apply the old settings to Noto fonts I think. To me unless something is really broken due to this, it's better leave as it is.