branch staging updated (3e93b2b -> d111ae4)

[guix-commits]

rhelling pushed a change to branch staging
in repository guix.

      from  3e93b2b   gnu: qt: Update to 5.12.4.
       new  65ff644   gnu: libvdpau: Update to 1.3.
       new  5ceb1a3   gnu: wayland-protocols: Update to 1.18.
       new  d111ae4   gnu: mesa: Update to 19.1.5.

The 3 revisions listed above as "new" are entirely new to this
repository and will be described in separate emails.  The revisions
listed as "adds" were already present in the repository and have only
been added to this reference.


Summary of changes:
 gnu/packages/freedesktop.scm |  4 ++--
 gnu/packages/gl.scm          |  4 ++--
 gnu/packages/video.scm       | 15 ++++++++-------
 3 files changed, 12 insertions(+), 11 deletions(-)