[ft] Debian Stable Still Has Old FreeType

[Lawrence D'Oliveiro]

I’ve just been getting to the bottom of a mysterious discrepancy in the
metrics of a .otf font between machines running Ubuntu 14.04 and those
running Debian (Stable 8.1 and also Unstable).

Turns out Debian Stable is still on version 2.5.2-3 of FreeType,
while Unstable has only just upgraded to 2.6-2. And whereas the
Ubuntu version of FreeType identifies itself as “2.5.2-1ubuntu2.4”, it
exhibits the newer behaviour rather than the older one.

This isn’t the first time I’ve come across a problem with Debian
FreeType, only to discover that upstream/newer versions don’t have that
problem.