[gtk] (12 commits) ...Merge branch 'big-glyphs' into 'master'

[Matthias Clasen <matthiasc src gnome org>]

Summary of changes:

  1c1d4f3... gsk: Test big glyphs (*)
  a64dfb1... gl: Make the glyph cache survive big glyphs (*)
  c7387a8... gsk: Test huge glyphs (*)
  fd4182f... gl: Log creation of glyph caches (*)
  ad2a1c9... gl: Improve glyph cache logging (*)
  0a09b8d... gl: Improve cache dropping code (*)
  3059d76... Add code to dump out the glyph caches (*)
  e0803f0... gl: Fix glyph cache aging (*)
  e0bf301... gsk tests: Add an --output option (*)
  3788e1d... testsuite: Pass --output for gsk tests (*)
  92994ba... Save gsk output from ci (*)
  a2c3c65... Merge branch 'big-glyphs' into 'master'

(*) This commit already existed in another branch; no separate mail sent