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.
The Uralic fonts contain additional letters used in most Uralic
languages with Russian-based writing systems - Khanty (all dialects),
Komi, Mansi (without marking long vowels), Mari, Nenets, Selkup
and Udmurt. According to Musayev, the fonts also support Altai,
Chukchi, Even, Evenki, Koryak and Nanai.
