[CFT] Mesa 19.0.0 update (mesa-libs, mesa-dri, libosmesa, clover)

[Kevin Oberman]

I have been running 19.0 for 10 days on my 12.0-STABLE system, Sandy Bridge
(which does not support Vulkan) with zero regressions. Using modesetting
driver. Have had no time to try the xf86-video-intel driver.
--
Kevin Oberman, Part time kid herder and retired Network Engineer
E-mail: rkoberman at gmail.com
PGP Fingerprint: D03FB98AFA78E3B78C1694B318AB39EF1B055683