[gdm] Created tag 3.17.3

[Ray Strode <halfline src gnome org>]

The unsigned tag '3.17.3' was created.

Tagger: Ray Strode <rstrode redhat com>
Date: Tue Jun 23 09:54:21 2015 -0400

    Version 3.17.3
    
    - Support env.d directory for manipulating session environment
    - Drop ConsoleKit support
    - Translation updates

Changes since the last tag '3.17.2':

Alexander Larsson (2):
      gdm-common: Add gdm_shell_expand() and tests
      load env.d/*.env files and set in session environment

Daniel Șerbănescu (2):
      Updated Romanian Docs Translation
      Updated Romanian Translation

Jordi Mas (1):
      Fixes to Catalan translation

Ray Strode (5):
      drop consolekit support
      require logind support
      session: drop session-type property
      NEWS: update for release
      configure: bump to 3.17.3