[rhythmbox] (5 commits) Non-fast-forward update to branch wip/sam/meson

[Sam Thursfield <sthursfield src gnome org>]

The branch 'wip/sam/meson' 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:

  51d6ae4... Remove some unused stuff from Autotools build instructions
  1af317a... Meson build instructions

Commits added to the branch:

  7f686ae... Update Polish translation (*)
  bc6a52d... Update Slovak translation (*)
  2058c36... Update German translation (*)
  950473a... Remove some unused stuff from Autotools build instructions
  07f79fa... Meson build instructions

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