media-libs/virglrenderer: version bump to 0.8.2

media-libs/virglrenderer: version bump to 0.8.2

 - contrary to the suggestion in https://bugs.gentoo.org/693246, do not
   add a USE=gbm flag. The current code cannot be compiled with
   mesa[gbm] and upstream restricted support for gbm allocation to
   minigbm in current master

 - port to meson build system

 - disable testsuite -

 - verified that the build system doesn't require python directly any more

Closes: https://bugs.gentoo.org/693246
Closes: https://bugs.gentoo.org/716354
Closes: https://bugs.gentoo.org/631740

Package-Manager: Portage-2.3.99, Repoman-2.3.22
Signed-off-by: Matthias Maier <tamiko@gentoo.org>