[GRASS5] license question

[Radim Blazek]

On Sunday 21 March 2004 09:29, Hamish wrote:
> grass/src/general/init/license.txt
> and
> grass51/lib/init/license.txt
>
> state:
> "Geographic Resources Analysis Support System (GRASS) is Copyright,
> 1999-2004 by the GRASS Development Team, and licensed under terms of the
> GNU General Public License (GPL)."
>
> Should that specifically say GPL version 2?
>
> The COPYING files do; they also say:
>
> "You should have received a copy of the GNU General Public License
> along with this program; if not, write to ..."

But it also says:

 "Parts of GRASS are not copyright by the GRASS development team.
  The original authors hold the copyrights and you have to abide
  to their licensing terms where noted."

this is not quite clear to me. 

Some parts have less restrictions, for example
grass51/lib/external/bwidget (LGPL)
grass/src/libes/bwidget (LGPL)
grass51/lib/external/shapelib (MIT/X, LGPL)
grass/src/libes/vect32_64/shapelib-1.2.8 (MIT/X, LGPL)

We redistribute those libs as GPL, is it true? 
Is it OK if we don't change their license statement? 
Or should we add a note about other licenses to COPYING etc.?

Are there pieces of the code with more restrictions than GPL?

In 5.7 I used also grass51/lib/form/html_library.tcl 
( grass51/lib/form/license.terms ), the code may be redistributed
for free, but I am not sure if it may be redistributed as GPL.
Can you look at it Bernhard?

Radim