Add hppa*64* support to libtool in binutils

[John David Anglin]

> ie, if I've done something like
> 
> CC=<some PA64 compiler>
> configure

That would be nice.  Looking at config.guess, I think it needs to do
a further check when HP_ARCH is found to be hppa2.0w using SC_CPU_VERSION
and SC_KERNEL_BITS.

Introducing the hppa64 arch wasn't a particularly great idea, but I don't
see any simple way around it.

Dave
-- 
J. David Anglin                                  dave.anglin@nrc.ca
National Research Council of Canada              (613) 990-0752 (FAX: 952-6605)