[doc,libstdc++] Link maintenance for the libstdc++ manual

[Gerald Pfeifer]

On Sun, 4 Nov 2012, Jonathan Wakely wrote:
>> http://gcc.gnu.org/onlinedocs/libstdc++/ext/pb_ds/acks.html
>>  - http://starship.python.net/crew/aaron_watters/kjbuckets/
>>    broken links
>>
>> http://gcc.gnu.org/onlinedocs/libstdc++/ext/pb_ds/references.html
>>  - http://anubis.dkuug.dk/jtc1/sc22/wg21/docs/papers/1997/N1075.pdf
>>    http://anubis.dkuug.dk/jtc1/sc22/wg21/docs/papers/2001/n1326l.html
>>    http://myweb.wvnet.edu/~gsa00121/books/amongdead30.zip
>>    http://www.dinkumware.com/htm_cpl/index.html
>>    http://www.scit.wlv.ac.uk/cgi-bin/mansec?3C+select
>>    all broken links
> These are just in the libstdc++ docs and can be fixed locally.

I looked into this a bit, and could not find the string "kjbuckets"
anywhere under libstdc++?

Anyone has the new locations of the two anubis.dkuug.dk links?

For amongdead30.zip, I failed to find a new link.  I looked for
the title "Thirty Year Among the Dead" and found some PDFs, alas
all behind some dubious download servers.

I also failed to find the dinkumware.com link under libstdc++/,
where does this come from?

The last one, appears in the bibliography, but does not seem to
be referenced from libstdc++/doc?  Not sure about the use case,
but could 
https://www.kernel.org/doc/man-pages/online/pages/man2/select_tut.2.html
by a replacement?

Gerald