Long double support on m68k

[Andrew Cagney]

> |> > This patch enables long double support for m68k.
> |> > Andreas.
> |> > 2001-07-23  Andreas Schwab  <schwab@suse.de>
> |> > * config/m68k/tm-m68k.h (TARGET_LONG_DOUBLE_FORMAT): Define.
> |> > (TARGET_LONG_DOUBLE_BIT): Define.
> |> > (REGISTER_VIRTUAL_SIZE): Return 12 for floating point registers.
> |> > (MAX_REGISTER_VIRTUAL_SIZE): Increase to 12.
> |> > (REGISTER_VIRTUAL_TYPE): Return builtin_type_long_double for
> |> > floating point registers.
> |> > (REGISTER_CONVERTIBLE, REGISTER_CONVERT_TO_VIRTUAL,
> |> > REGISTER_CONVERT_TO_RAW): Remove.
> |> > * config/m68k/xm-linux.h (HOST_LONG_DOUBLE_FORMAT): Define.


Ok, I've checked this in.  As they say, there is only one way to fix 
this bug and Andreas has done exactly that.

	Andrew