[committed] Replace quadmath_flt128tostr (gdtoa based) with quadmath_snprintf (glibc based) and printf hooks (PR fortran/47642)

[Jakub Jelinek]

On Mon, Feb 14, 2011 at 08:57:46AM -0800, Steve Kargl wrote:
> On Mon, Feb 14, 2011 at 07:58:53AM -0800, Steve Kargl wrote:
> There seems to be all sorts of problems with this commit.

Missing alloca.h has been fixed in the mean time (see the commit
to fix mingw).

	Jakub