[totem] (12 commits) ...main: Add Shift+V to toggle subtitles

[Bastien Nocera <hadess src gnome org>]

Summary of changes:

  3a2528e... backend: Add auto cleanup for BvwLangInfo (*)
  ab8d0f3... backend: Move subtitles/languages list caching to video wid (*)
  db7a515... menu: Split updating subtitles and languages menus (*)
  21086a6... backend: Add subtitles/languages changed signals (*)
  c16df46... tests: Prepare for using title as part of sub/lang naming (*)
  252354b... backend: Move more sub/lang generation inside backend (*)
  33159fc... main: Move subtitles and audio tracks to a separate menu (*)
  f19e60a... menu: Remove the use of submenus in subtitle menu (*)
  6c451a8... main: Add "V" keyboard shortcut to cycle through subtitles (*)
  1b7bce7... backend: Don't overwrite current sub when disabling it (*)
  35baa6f... backend: Add bacon_video_toggle_subtitles() (*)
  b3c9ded... main: Add Shift+V to toggle subtitles (*)

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