meson: Provide consistent symbols after meson conversion

Closes: GNOME/babl#45
2 jobs for consistent-symbols in 2 minutes and 16 seconds (queued for 2 seconds)
latest
Status Job ID Name Coverage
  Build
passed #465505
latest-meson-lcms

00:01:26

passed #465506
latest-meson-nolcms

00:02:15