xdpyinfo: upgrade 1.3.2 -> 1.3.3

Changes:

      xdpyinfo: Fix printing the X.Org release version for xserver >= 21
      Update README for gitlab migration
      Update configure.ac bug URL for gitlab migration
      Only check for XFree86 if vendor string doesn't match X.Org
      Add explicit casts to clear implicit conversion warnings
      Disable DMX support by default, leave --with-dmx to enable it
      gitlab CI: add a basic build test
      Build xz tarballs instead of bzip2
      Fix spelling/wording issues
      gitlab CI: stop requiring Signed-off-by in commits
      autogen.sh: use quoted string variables
      autogen: add default patch prefix
      autogen.sh: use exec instead of waiting for configure to finish
      fix -Wunused-[...] compiler warnings

temporarily override SRC_URI which is hard-coded in xorg-app-common.inc
since new versions of packages use a new compression format - .tar.xz

Signed-off-by: Wang Mingyu <wangmy@fujitsu.com>
Signed-off-by: Luca Ceresoli <luca.ceresoli@bootlin.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
(cherry picked from commit 712552b5)
Signed-off-by: Steve Sakoman <steve@sakoman.com>