rfa: Mention people that contributed to the frame rewrite; upate notes

[Eli Zaretskii]

> Date: Tue, 11 Apr 2006 10:29:24 -0400
> From: Andrew Cagney <cagney@redhat.com>
> CC: Andrew Cagney <cagney@redhat.com>, Randolph Chung <randolph@tausq.org>
> 
> Andrew Cagney wrote:
> >  From late '02 to early '05 many people contributed to gdb's frame 
> > rewrite.  This both adds that list to the acknowledge section, and fixes 
> > a minor error in the description.
> 
> Eli,
> When you have a moment, would you be able to review my patch?

Oops, sorry, I somehow managed to miss your original message.

This is approved, please commit it, after fixing the few minor gotchas
below.  Thanks.

> > +Andrew Cagney completely re-designed and re-implemented @value{GDBN}'s
> > +unwinder framework, this consisting of a fresh new design featuring
> > +frame IDs, independent frame sniffers, and the sentinel frame. Mark
                                                                  ^^^
Need two spaces here.

> > +Kettenis implemented the @sc{dwarf} 2 unwinder, Jeff Johnston the
                              ^^^^^^^^^^^^
This should be @sc{dwarf 2}, so that `2' gets typeset in the same
fonts as `dwarf'.