[glib] (9 commits) ...Merge branch 'gobject-query' into 'main'

[Philip Withnall <pwithnall src gnome org>]

Summary of changes:

  17a1c29... gobject-query: Delete unused code
  91ff469... gobject-query: Use proper Unicode tree drawing characters
  98e6ac7... gobject-query: Remove extraneous blank line between each ou
  993f3f4... gobject-query: Make a --help string slightly more helpful
  ad77557... gobject-query: Print --help output to stdout rather than st
  6211e25... gobject-query: Combine two identical if-branches
  fbdbbfa... gobject-query: Add a --version argument
  c49f481... tests: Add basic tests for gobject-query utility
  103a9d5... Merge branch 'gobject-query' into 'main'