[totem] (15 commits) Non-fast-forward update to branch wip/hadess/build-warnings

[Bastien Nocera <hadess src gnome org>]

The branch 'wip/hadess/build-warnings' 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:

  fddb0dd... build: Fix warning caused by libgd options
  5728be3... build: Fix obsolescence warning with Python 3 check

Commits added to the branch:

  bb807c1... backend: Fix type of BvwLangInfo struct members (*)
  b7c227d... backend: Fix g_list_free_full() warning (*)
  c0211c7... backend: Remove unused num variable (*)
  867a59a... backend: Remove unused get_label_for_type() function (*)
  6110d8d... backend: Better documentation for BvwLangInfo (*)
  0200e35... backend: Add new BvwTrackType enum (*)
  6f57d11... main: Re-add support for track with no language (*)
  66b2161... tests: And add test for language-less tracks (*)
  ca67b89... main: Really fix translator comment (*)
  794127b... main: Remove boolean in menu creation list (*)
  e10b4f8... Update Turkish translation (*)
  c430352... Update Swedish translation (*)
  2d649da... Update Polish translation (*)
  722f75d... build: Fix warning caused by libgd options
  f382993... build: Fix obsolescence warning with Python 3 check

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