Comment # 9 on bug 105262 from LoneVVolf

# first bad commit: [5b14e06d8b42e2b08ebc52b6c314ef8647d87a1f] r600: work out
shader export mask at shader build time (v1.1)

mesa-git from this commit on doesn't render TTF fonts anymore in openbox, gvim,
libreoffice, rxvt-unicode and firefox / thunderbird gtk-interfaces .
qt programs don't appear to be affected.

Affected videocards :
Radeon 4650HD Pro
Radeon HD 4870 with AMD RV770 chipset