Changelog:
=========
- Add `enable-tools` option to Meson build (on by default) to allow disabling
the `xkbcli` tools.
- In `xkbcli list`, fix "YAML Norway problem" in output.
- In libxkbregistry, variants now inherit iso639, iso3166 and brief from parent
layout if omitted.
- In libxkbregistry, don't call `xmlCleanupParser()` - it's not supposed to
be called by libraries.
- In libxkbregistry, skip over invalid ISO-639 or ISO-3166 entries.
Signed-off-by: Wang Mingyu <wangmy@fujitsu.com> Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
