[gnome-bluetooth] (22 commits) ...lib: Add BluetoothAgent test

[Bastien Nocera <hadess src gnome org>]

Summary of changes:

  f602219... lib: Use g_autoptr to free short-lived GDBusProxy objects (*)
  859a7d0... lib: Use g_autoptr to free GError (*)
  91884e2... lib: Use g_auto to free short-lived string (*)
  d9e994a... lib: Use g_clear_* to simplify some code (*)
  1421fc7... lib: Simplify single-include (*)
  e1f32bc... lib: Simplify BluetoothAgent object declaration (*)
  61b3a0b... lib: Simplify BluetoothChooserCombo object declaration (*)
  4e076b2... lib: Simplify BluetoothFilterWidget object declaration (*)
  0d7aa9c... lib: Remove use of _composite_child() (*)
  8c67555... lib: Remove deprecated gtk_tree_view_set_rules_hint() calls (*)
  c6c4d1f... lib: Port bluetooth_client_setup_device() to GTask (*)
  e0349a5... lib: Port bluetooth_client_connect_service() to GTask (*)
  d93955b... settings: Remove use of deprecated GTimeVal (*)
  1e6dbdc... lib: Remove use of deprecated GtkMisc and GtkAlignment (*)
  e2771de... lib: Simplify device search helpers (*)
  677d9e9... build: Bump required glib version (*)
  0873958... lib: Remove unused gnome-bluetooth.symbols file (*)
  02ec6e0... lib: Remove non-existent bluetooth_agent_setup() function (*)
  4378bdb... lib: Namespace BluetoothAgent errors correctly (*)
  b434823... lib: Export BluetoothAgent to our private introspection (*)
  edd3cfa... lib: Add guards to bluetooth_agent_register() (*)
  a62b71e... lib: Add BluetoothAgent test (*)

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