D8798: Add xf86-input-libinput support for X11 mouse backend.

[Xuetian Weng]

xuetianweng marked 3 inline comments as done.

REPOSITORY
  R119 Plasma Desktop

REVISION DETAIL
  https://phabricator.kde.org/D8798

To: xuetianweng, ngraham, #plasma, jriddell
Cc: jriddell, apol, rkflx, plasma-devel, ZrenBot, progwolff, lesliezhai, 
ali-mohamed, jensreuterberg, abetts, sebas, mart