xwayland: add -noTouchPointerEmulation

In some scenarios, the Wayland compositor might have more knowledge
than the X11 server and may be able to perform pointer emulation for
touch events better. Add a command-line switch to allow compositors
to turn Xwayland pointer emulation off.

Signed-off-by: Simon Ser <contact@emersion.fr>
5 jobs for no-touch-emulate-pointer in 5 minutes and 55 seconds (queued for 1 second)
Status Job ID Name Coverage
  Docker Image
passed debian-buster #11510024

00:00:54

 
  Build And Test
passed autotools #11510025

00:05:01

passed meson #11510026

00:01:43

passed meson-noglamor #11510027

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passed mingw-cross-build #11510028

00:00:40