[retro-gtk] (22 commits) Non-fast-forward update to branch wip/aplazas/gl-display

[Adrien Plazas <aplazas src gnome org>]

The branch 'wip/aplazas/gl-display' 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:

  6858080... Add RetroGLDisplay
  c79fa27... truc

Commits added to the branch:

  228f7c3... Define error quarks with G_DEFINE_QUARK (*)
  04e1039... Merge controller ID and index files into one (*)
  19fa712... controller-codes: Add count values (*)
  6ea0807... controller-type: Add the count value (*)
  8d6b039... Add RetroInput (*)
  c523406... core: Make controller query methods private (*)
  731c47b... controller: Add has_capability() (*)
  c551864... retro-core: Add set_default_controller() (*)
  8eee0c7... demo: Set default controllers (*)
  ec01044... input: Simplify the accessors (*)
  e27c64c... core: Drop the remove_controller() method (*)
  5bf71d8... environment: Replace gboolean by bool in get_variable_updat (*)
  c8955ab... flatpak: Downgrade the SDK from master to 3.26 (*)
  781a8af... build: Add Meson support (*)
  1596e83... build: Drop Autotools support (*)
  95497f6... Add .gitignore (*)
  ed46511... build: Fix RETRO_PLUGIN_PATH (*)
  f8c4ebd... core-view: Add set_as_default_controller() method (*)
  3f8892d... demo: Use retro_core_view_set_as_default_controller() (*)
  3a161cb... Add RetroGLDisplay
  fbfe337... truc
  7159ae4... fixes

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