64 bit compilation on solaris 10

[Mike Helm]

gmp-4.1.4
SunOS something 5.10 Generic_118822-11 sun4u sparc

About line 2512 in configure:
      # sparc64-*-linux-gnu is a misnomer, since there's no support for any

this test
        case $host in
          *-*-solaris2.[7-9])
blocks configure from setting up 64 bit compilation on solaris 10
(see uname above)

Somewhere in configfsf.sub "sunos5" gets turned into solaris2.
setting the os to solaris2.9  (I gave --build sparcv9-sun-solaris2.9 
to configure) allows a 64 bit gmp library to build which seems
to work (passes make check).