Final separate debug info patch

[Alexander Larsson <alexl at redhat dot com>]

After a few iterations I stopped getting comments, so I guess this patch 
is mature now. I forward ported the patch to cvs HEAD, so this should be 
fine to go in.

The docs changes are approved by Eli, and Daniel Jacobowitz promised to 
handle the test suite changes if this goes in.

The patch doesn't have any autoconf-generated changes in it, because I 
don't have the exact same version of autoconf that gdb seems to use.

-- 
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 Alexander Larsson                                            Red Hat, Inc 
                   alexl@redhat.com    alla@lysator.liu.se 
He's an unconventional zombie gangster on a mission from God. She's a 
provocative tempestuous former first lady who dreams of becoming Elvis. They 
fight crime!

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