[gnome-robots] Created tag 3.21.91

[Michael Catanzaro <mcatanzaro src gnome org>]

The unsigned tag '3.21.91' was created.

Tagger: Michael Catanzaro <mcatanzaro gnome org>
Date: Sun Aug 28 19:46:34 2016 -0500

    GNOME Robots 3.21.91

Changes since the last tag '3.21.90':

Alexandre Franke (1):
      Updated French translation

Anders Jonsson (1):
      Updated Swedish translation

Arnaud Bonatti (1):
      Fix libgnome-games-support target.

Balázs Úr (1):
      Updated Hungarian translation

Daniel Mustieles (1):
      Updated Spanish translation

Fabio Tomat (1):
      Updated Friulian translation

Mario Blättermann (1):
      Updated German translation

Matej Urbančič (1):
      Updated Slovenian translation

Michael Catanzaro (3):
      Update autogen.sh for new style checker location
      Add missing changes from 3.21.90 release
      Prepare 3.21.91

Piotr Drąg (1):
      Updated Polish translation

Мирослав Николић (1):
      Updated Serbian translation