Log Message:
Update to 2.26.0.

Changes in 2.26.0:

* Fix distcheck
* Fix valgrind warning
* Translation updates (Thanks to all tranlators!)

Changes in 2.25.92:

* #566801 Docking+undocking all makes the buttons disappear and
	crashes if you use "Reset dock layout" (Sebastien Granjoux)
* #573522 More patches for GDL (Joel Holdsworth)
* Small documentation update

Changes in 2.25.91:

* Added some gtk-doc documentation (Joel Holdsworth)
* Cleaned-up gtk+ includes (Pedro Fragoso)