dead links on 'G77 Bugs' page

[Alexander Achenbach]

Hi there.

I just came across a defunc page:

    http://gcc.gnu.org/onlinedocs/g77_bugs.html

is supposed to contain links to the various 'known bugs'
of G77, but the links that are there all refer to non-existent
pages (such as to

    http://gcc.gnu.org/onlinedocs/But-bugs.html#But-bugs

).

Cheers
Alex