[glib] (19 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:

  d4f3add... param: Add g_param_value_is_valid
  98739e9... Add tests for g_param_value_is_valid
  d76e5bf... gobject: Use value_is_valid
  a065a1d... Add g_param_value_is_valid to the docs
  b089798... Improve GObject perf test
  2df99bf... gobject: Drop an unused quark
  dbd0c20... Simplify g_object_new_with_properties
  33441f7... Don't inline deprecation warnings
  703ed73... Keep a count of construct params
  635cf28... Move deprecation warnings to object_set_property
  8b21b17... Don't copy values when collecting in g_object_new
  9999553... Don't copy values during g_object_set
  b200291... Keep a separate flag for notify handlers
  cf5c8b0... Avoid property notification during object construction
  aacf7c8... Avoid property notification during g_object_set
  b4b1a72... Avoid g_object_ref/unref in some cases
  3a574a8... Avoid g_value_type_compatible
  e13254a... Avoid g_param_spec_get_redirect_target
  dca68db... Avoid g_type_class_peek
  2daad1a... gobject: Speed up property lookup

Commits added to the branch:

  935e981... param: Add g_param_value_is_valid (*)
  fe81083... Add tests for g_param_value_is_valid (*)
  791febc... gobject: Use value_is_valid (*)
  2ea081c... Improve GObject perf test (*)
  c06b306... gobject: Drop an unused quark (*)
  218051a... Simplify g_object_new_with_properties (*)
  e545af3... Don't inline deprecation warnings (*)
  800cc78... Keep a count of construct params (*)
  e4ccb4f... Move deprecation warnings to object_set_property (*)
  24de077... Don't copy values when collecting in g_object_new (*)
  54c4ef6... Don't copy values during g_object_set (*)
  c9e8e68... Keep a separate flag for notify handlers (*)
  0c0489e... Avoid property notification during object construction (*)
  8ab1bc7... Avoid property notification during g_object_set (*)
  465f066... Avoid g_object_ref/unref in some cases (*)
  1cfe1ca... Avoid g_value_type_compatible (*)
  b8a2277... Avoid g_param_spec_get_redirect_target (*)
  7632a0a... Avoid g_type_class_peek (*)
  c734cf0... gobject: Speed up property lookup

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