package/wayland: bump to version 1.19.0

package/wayland: bump to version 1.19.0

Update wayland to version 1.19.0, which mostly includes bug fixes and is
the minimum version required by wlroots 0.13.0

Patch "0001-build-add-option-to-disable-tests.patch" is updated as an
actual backport from upstream. Since upstream has migrated to meson, and
we've already switched too, drop the autostuff hunks.

Patch "0002-meson-do-not-check-for-c.patch" is replaced by a newer one,
"0002-meson-only-require-cpp-for-tests.patch" which was accepted by
upstream as an improved version of it.

Signed-off-by: Adrian Perez de Castro <aperez@igalia.com>
[yann.morin.1998@free.fr:
  - do actual backports of upstream patches now they've been merged
  - consequently, drop the legacy autostuff hunks from first patch
]
Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>