[PATCH] automated demangling styles list.

[DJ Delorie]

> Since my change touches cplus-dem.c and demangle.h, I won't spend my
> time until someone who can approve my change tells me to go ahead. You
> can always get my Linux binutils to see how it works.

> 	* demangle.h (demangler_list_buffer): Removed.
> 	* demangle.h (demangling_styles): Renumbered.

These break backward compatibility.  There may be others as well.

> 	* configure.in: Don't rebuild by autoconf. Modify it by hand.
> 	* configure: Rebuild.

Manually editing generated files is obviously not acceptable, but your
comment doesn't make sense - autoconf doesn't build configure.in.