[gnome-desktop] Created tag 3.27.90

[Michael Catanzaro <mcatanzaro src gnome org>]

The unsigned tag '3.27.90' was created.

Tagger: Michael Catanzaro <mcatanzaro igalia com>
Date: Fri Feb 9 20:44:26 2018 -0600

    gnome-desktop 3.27.90

Changes since the last tag '3.27.2':

Bastien Nocera (9):
      thumbnail: Fix compile-time warning
      thumbnail: Fix a shadowed variable
      thumbnail: Fix a compile-time warning
      thumbnail: Print bwrap command-line in debug
      thumbnail: Pass on G_MESSAGES_* envvar to thumbnailer
      thumbnail: Print debug if there's no thumbnailer
      thumbnail: Remove _has_uri() helper function
      thumbnail: Mention which functions are blocking in docs
      build: Bump ltversion again

Laurent Bigonville (1):
      build: Disable seccomp on Linux arches where it's not supported

Michael Catanzaro (2):
      Bump version to 3.27.90
      Add NEWS for release

Robert Ancell (1):
      gnome-bg: Add new GdkRGBA methods to replace obsolete GdkColor methods