Debian reproducibility testing runs a slightly different package
build that seemingly doesn't set the `DEB_BUILD_MULTIARCH` variable.
This change introduces our own environment variable to detect
package builds so that we can skip the ibus-keyman integration
tests that require running an X server.
This change modifies the `run-tests.sh` script so that tests
run on both Wayland (if supported) and X11 unless
`--no-wayland` or `--no-x11` is specified.
This change also adds the new argument `--wayland` to the
`ibus-keyman-tests` executable which runs the tests under
Wayland.
Note that running Wayland tests is only possible in Ubuntu 21.10+
because it requires a version of `mutter` that supports the
headless option which got added in mutter 40.
This also fixes a failing test (`048 - modifier keys keep context`)
if surrounding text is not supported. If the user presses the
capslock key we shouldn't reset the context if no rules match.
Fixes#5613.
This change adds integration/regression tests for ibus-keyman. It
re-uses the unit tests that we have for core.
Also modifies one test so that the context doesn't use characters
used in the keyboard. This makes it easier to setup in ibus-keyman
tests.
