This makes it easier to use the mk fragment with fonts that need a build
step, like new liberation-ttf.
While here switch some fonts using post-install unnecessarily to do-install
(Committed at the same time as it wasn't tested separately)
No PLIST changes to the packages/build breakage, so no changes expected
to the packages.
A color and B&W emoji SVGinOT font built from the Twitter Emoji
for Everyone artwork with support for ZWJ, skin tone diversity and
country flags.
The font works in all operating systems, but will currently only
show color emoji in Firefox and Thunderbird. This is not a limitation
of the font, but of the operating systems and applications. Regular
B&W outline emoji are included for backwards/fallback compatibility.
