[Fontconfig] hintslight for CFF fonts

[Akira TAGOH]

Hi,

Getting some requests to enforce hintslight for CFF fonts. so I'm
pondering to add the follow recipe by default and enable it in next
release.

<match target="font">
  <test name="fontformat" compare="eq">
    <string>CFF</string>
  </test>
  <edit name="hintstyle" mode="assign">
    <const>hintslight</const>
  </edit>
</match>

Any comments on this? also would be very appreciated if you can test it.

Regards,
-- 
Akira TAGOH