Obsolete fileutils, shellutils, textutils web pages updated

[Bob Proulx]

Just an fyi...

I have updated the web pages for the obsolete fileutils, shellutils,
textutils to remove obsolete information leaving only the redirect to
the new coreutils and also updated them to the new gnu.org html page
templates.  As Paul said when he updated the main coreutils page a
while back, "It does look fancier now."  :-)

Although the css diversions are not designed for short pages like
those and so there are some display artifacts in my browser.  I think
for the obsolete pages this is not worth deviating from the site
standard css to avoid those though.

Bob