[Development] qt5 bundling harfbuzz

[Rex Dieter]

Rex Dieter wrote:

> During review for qt5 packaging in fedora, we noticed qt5 includes a
> bundled copy of harfbuzz in src/3rdparty/harfbuzz/, and there currently
> doesn't seem to be --system-harfbuzz type build option available.

svuorela poked me on irc, and seems it's clear now that qt (4 and 5) still 
use old harfbuzz mentioned on 
http://www.freedesktop.org/wiki/Software/HarfBuzz and not the new system 
stuff (for better or worse).

-- rex