PATCH: Add x86 xml files

[Mark Kettenis]

> Date: Sun, 7 Feb 2010 16:50:00 -0500
> From: Daniel Jacobowitz <dan@codesourcery.com>
> 
> On Thu, Feb 04, 2010 at 04:00:52PM -0800, H.J. Lu wrote:
> > +<!DOCTYPE feature SYSTEM "gdb-target.dtd">
> > +<feature name="org.gnu.gdb.i386.core">
> 
> In addition to Mark's comments:
> 
> * The new features will need to be documented in the manual.  I'd
> recommend doing that along with the XML files.
> 
> * I can't remember exactly why there are some previously existing
> features with the same name and two possible contents.  It seems like
> a better idea to call one of these org.gnu.gdb.x86_64.* (or x86-64 or
> amd64 or whatever).

Oh, wait, please use amd64 instead of x86-64 everywhere in GDB please.
That includes the filenames for the xml files.