Log Message:
Update to 0.15.6, set LICENSE to gnu-lgpl-v2.

What's new in gnome-mag-0.15.6:

* Fixes for the following bugs:
        #573023 - Migrate deprecated gnome-vfs to gio/gvfs (Simon Vanderlinden)
        #577937 - colorblind applet does not run (Willie Walker)

* Translations:
	* Krishnababu K (te), Djihed Afifi (ar), Amitakhya Phukan (as),
	  Ignacio Casal Quinteiro (gl)