[gdl] Created tag GDL_3_18_0

[Sebastien Granjoux <sgranjoux src gnome org>]

The signed tag 'GDL_3_18_0' was created.

Tagger: Sébastien Granjoux <seb sfo free fr>
Date: Sun Sep 20 09:16:53 2015 +0200

    3.18.0

Changes since the last tag 'GDL_3_16_0':

Jordi Mas (1):
      Fixes to Catalan translation

Lukas K (2):
      bgo #729325 - Set type hint of dragged-out windows to TOOLBAR
      bgo #751239: fix preview window color

Pedro Albuquerque (1):
      Updated Portuguese translation

Piotr Drąg (1):
      Updated Polish translation

Sébastien Granjoux (1):
      Update files for release

Vladimir Motilenko (1):
      Use "resize" property and fix a bug in gdl_dock_paned_set_orientation