[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 12:57:43PM -0800, Richard Henderson wrote:
> On 02/14/2011 07:51 AM, Jakub Jelinek wrote:
> > +#if __GLIBC_MINOR__ <= 13
> 
> Check for glibc major here?

I thought it is very unlikely to change, but yeah, I can test for that too.
Though, if __GLIBC_MAJOR__ is bumped, it must be because of incompatible
changes and then who knows how will the printf hooks look like.

	Jakub