[arch-dev-public] [draft] nvidia-340xx and nvidia

[Sven-Hendrik Haase]

As NVIDIA dropped support for G8x, G9x, and GT2xx GPUs with the release
of 343.22, there now is set of nvidia-340xx packages supporting those
older GPUs. 340xx will receive support until the end of 2019 according
to NVIDIA.

Users of older GPUs should consider switching to nvidia-340xx. The
nvidia-343.22 and nvidia-340xx-340.46 packages will be in testing for a
few days.