[gnome-session] Created tag 3.29.90

[Ray Strode <halfline src gnome org>]

The unsigned tag '3.29.90' was created.

Tagger: Ray Strode <rstrode redhat com>
Date: 1533333571 -0400

    3.29.90
    
    * Drop deprecated environment variable again
    * harden permissions on config dir
    * Translation updates

Changes since the last tag '3.28.0':

Bastien Nocera (1):
      main: Remove GNOME_DESKTOP_SESSION_ID envvar

Cédric Valmary (1):
      Update Occitan translation

Gun Chleoc (1):
      Update Scottish Gaelic translation

Ray Strode (3):
      xsmp: don't check for HAVE_XTRANS
      NEWS: update for release
      meson: bump to 3.29.90

Robert Antoni Buj Gelonch (1):
      Update Catalan translation

Sebastien Bacher (1):
      gsm-util: create the config directory with 0700

Tong Hui (1):
      Update Chinese (China) translation