bug#8940: Evidence of bug in `random'

[Paul Eggert]

Thanks for that bug report.  Recently, I independently found
severe nonrandomness in 'random' and installed a patch
in the Emacs trunk as bzr 104596
<http://bzr.savannah.gnu.org/lh/emacs/trunk/revision/104956>.
This patch should appear in the next major release of Emacs.

Please give the patch a try.  It may not be as good as the Mersenne
twister etc., but it should be as good as Emacs 22 was.

I'll mark this bug report as 'done' for now, but we can
reopen it if the patch doesn't fix your problem.