GPL2 header from firebird (without disclaimer), notice theres no copyright attributed and only the GPLv2 (without the v2 or later clause).

Contributors list isnt used much in our C code so probably its easier if people just use svn blame for this.

Can change if this isnt acceptable but I guessed people didnt care so much since most scripts had no header.

release/scripts/ui/properties_data_metaball.py

@@ -1,3 +1,8 @@
+# This software is distributable under the terms of the GNU
+# General Public License (GPL) v2, the text of which can be found at
+# http://www.gnu.org/copyleft/gpl.html. Installing, importing or otherwise
+# using this module constitutes acceptance of the terms of this License.
+
 import bpy
 
 class DataButtonsPanel(bpy.types.Panel):