[gnome-games] (15 commits) ...nintendo-ds: Remove GSettings schema

[Alexander Mikhaylenko <alexm src gnome org>]

Summary of changes:

  a67f317... retro-runner: Don't save x-dpi and y-dpi for screenshots (*)
  fdd0b65... retro-runner: Stop using x-dpi and y-dpi (*)
  73e19de... retro-runner: Use savestate aspect ratio for pixbufs (*)
  1d25bb1... savestate: Add get_metadata() (*)
  9e405ba... platform: Add get_savestate_type() (*)
  5f2f5ac... savestate: Allow platforms to use custom savestate types (*)
  2a600f7... retro-runner: Add functions for extra metadata (*)
  d7b08b7... savestate: Add save_extra_metadata() (*)
  9413114... nintendo-ds: Add NintendoDsLayout (*)
  a8ebc37... nintendo-ds: Use NintendoDsLayout for UI (*)
  e51be6c... nintendo-ds: Reduce GSettings usage (*)
  720fef9... nintendo-ds: Add NintendoDsPlatform (*)
  9a5fa42... nintendo-ds: Add NintendoDsSavestate (*)
  d804584... nintendo-ds-runner: Store screen layout data in savestates (*)
  ee78310... nintendo-ds: Remove GSettings schema (*)

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