xscreensaves included non-free screensavers.

Hello.

xscreensaver included non-free screensavar.
This is "bsod", "pacman", "apple2", "pong", "xmatrix", "rubik", "rubikblock" and "starwars".

Reason:

1. "apple2": included proprietary os. It is non-free.
2. "bsod": included proprietary os and game images(xpm file) and material. It is non-free. (But Free (freedom) OS is included, It is Free, OK.)
3. "pacman": included Pacman images, Its non-distributable, It is non-free. (Copyright and trademark problem).
4. "starwars": "starwars" is trademark'ed. and non-free material included. Its non-distributable, It is non-free.
5. "pong" "pong" is trademark'ed. Its non-free.
6. "rubikcube" and "rubikblock": "Rubikcube" is trademark. Its non-free.

Suggests:

1. Remove non-free screensavars.

2. Replace GFSD free screensavars.

3. Remove Trisquel repos.

Thanks.

Reference:

https://www.gnu.org/distros/free-system-distribution-guidelines.html