This adds some new ports:
converters/linux-c7-fribidi required by x11-toolkits/linux-c7-pango.
graphics/linux-c7-libglvnd required by graphics/linux-c7-dri.
graphics/linux-c7-wayland required by graphics/linux-c7-dri.
print/linux-c7-freetype unbundled from emulators/linux_base-c7 because it
depends on graphics/linux-c7-png now.
Mesa OpenGL libraries in graphics/linux-c7-dri now support libglvnd (GL
Vendor-Neutral Dispatch library) which allows some applications to use
Mesa while others use Nvidia OpenGL. The x11/nvidia-driver* ports have
been changed so versions above 390.42 now use CentOS libglvnd and no longer
install a bundled copy.
PR: 229431
Submitted by: pkubaj (partly)
f099d068fc