[glib] (20 commits) Non-fast-forward update to branch gobject-speedups4

[Matthias Clasen <matthiasc src gnome org>]

The branch 'gobject-speedups4' was changed in a way that was not a fast-forward update.
NOTE: This may cause problems for people pulling from the branch. For more information,
please see:

 https://wiki.gnome.org/Git/Help/NonFastForward

Commits removed from the branch:

  673fdd2... Improve GObject perf test
  04e11a6... gobject: Drop an unused quark
  553455d... Simplify g_object_new_with_properties
  7ab53e7... Simplify g_object_notify_by_pspec
  8ab23ec... Don't inline deprecation warnings
  f22d1a2... Move deprecation warnings to object_set_property
  1f8a9c9... Don't copy values when collecting in g_object_new
  dd9e679... Don't copy values during g_object_set
  2c80355... Keep a separate flag for notify handlers
  1bb848c... Avoid property notification during object construction
  9af305f... Avoid property notification during g_object_set
  47eb50f... Avoid g_object_ref/unref in some cases
  cd87213... Avoid g_param_spec_get_redirect_target
  d75eb24... Avoid g_type_class_peek
  b0ec24c... gobject: Avoid redundant atomics
  3e9ac87... gobject: Speed up property lookup

Commits added to the branch:

  3db1d26... testsuite: Make tests not fail in !debug builds (*)
  0480394... Merge branch 'skip-debug-only-tests' into 'main' (*)
  0ddea2d... gtype: Speed up type checks for final types (*)
  cf988d2... Merge branch 'final-type-speedup' into 'main' (*)
  0e98bb3... Improve GObject perf test (*)
  02e2707... gobject: Drop an unused quark (*)
  4e989bc... Simplify g_object_new_with_properties (*)
  bd86d17... Simplify g_object_notify_by_pspec (*)
  e4b4d61... Don't inline deprecation warnings (*)
  04bac62... Move deprecation warnings to object_set_property (*)
  a363921... Don't copy values when collecting in g_object_new (*)
  882e512... Don't copy values during g_object_set (*)
  29433a5... Keep a separate flag for notify handlers (*)
  f60b0c7... Avoid property notification during object construction (*)
  d44760d... Avoid property notification during g_object_set (*)
  6142d1b... Avoid g_object_ref/unref in some cases (*)
  30c3010... Avoid g_param_spec_get_redirect_target (*)
  e2de714... Avoid g_type_class_peek (*)
  d1ad3fd... gobject: Avoid redundant atomics (*)
  7842920... gobject: Speed up property lookup

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