V3 PATCH: Fix PR3988

[Franz Sirl]

On Tuesday 14 August 2001 00:24, Mark Mitchell wrote:
> The new limits stuff was accidentally thinking that the x86 had a long
> double type with 128 bits of precision, when really the precision is
> 80 bits.  Here's the fix.
>
> Tested on i686-pc-linux-gnu, installed on the branch and on the
> mainline.

Hmm, don't we need the same stuff for powerpc too? AFAIK long double == 
double still on PPC, so __glibcpp_long_double_bits has to be set to 64. This 
happens for powerpc64 (in config/os/gnu-linux/bits/os_defines.h), but not for 
powerpc.

Franz.