[ubuntu-x] hwe-16.04 refresh for 16.04.3 in staging

[Timo Aaltonen]

	Hi

The X stack from 17.04 has been backported for xenial (16.04) and is
available on ppa:canonical-x/x-staging. To use it, make sure you're on
xenial, then run (as root, or via sudo):

# apt-add-repository ppa:canonical-x/x-staging
# apt update
# apt upgrade
# apt install xserver-xorg-hwe-16.04

last bit is only needed if the machine is not already running the hwe
stack from 16.04.2.

If you find (new) bugs, file them with 'ubuntu-bug xorg-hwe-16.04'.
Happy testing!

-- 
t