Remove obsolete Tru64 UNIX V5.1B support

[Rainer Orth]

Jakub Jelinek <jakub@redhat.com> writes:

> On Mon, Mar 05, 2012 at 09:28:18AM -0800, Richard Henderson wrote:
>> >   TARGET_HAS_XFLOATING_LIBS	  1		TARGET_LONG_DOUBLE_128
>> > 
>> >   Same here: any configurations with !TARGET_LONG_DOUBLE_128?
>> 
>> I wouldn't think so; glibc before version 2.4, circa 1998?
>
> No idea about MIPS, but for ppc/ppc64/s390/s390x/sparc32 the selectable
> size long double support is from 2006.

... which leaves us with the BSDs.  No idea about those.

	Rainer

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Rainer Orth, Center for Biotechnology, Bielefeld University