[gtk] (22 commits) ...Merge branch 'matthiasc/css-change-tracking-4' into 'master'

[Matthias Clasen <matthiasc src gnome org>]

Summary of changes:

  69fb364... Tweak the file transfer portal _again_ (*)
  6e09c5c... Quiet compiler warnings in release builds (*)
  cc3cf58... cssnodedeclaration: Make print output deterministic (*)
  1e7705c... cssnode: Fix a corner case in style computation (*)
  81b65ea... Add an Empty theme for tests (*)
  f1fce52... node tests: Clean up --generate support (*)
  2e7cb60... node tests: Show the window (*)
  d4f3979... node tests: Update expected output (*)
  d9b1a1e... style tests: Clean up --generate support (*)
  7b1ab8f... style tests: Show the window (*)
  0f694b8... style tests: Update expected output (*)
  b41bba0... Add a way to dump css node change values (*)
  9de3192... Add a test for css change flags (*)
  8ecd4e8... Add testcases for css change flags (*)
  7d72703... Revert "Remove no longer used code" (*)
  d0a8a71... Bring back the reserved bit (*)
  b2775d9... Redo the way we compute change (*)
  2a919a4... Go back to the tree for computing change (*)
  b4a9cf2... Remove no longer needed code (*)
  b8b90fe... change tests: Update test output (*)
  f28cd6c... Remove the widget-factory test again (*)
  03883b8... Merge branch 'matthiasc/css-change-tracking-4' into 'master

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