[Gc] gc make fail on Solaris 10 x86_64 with gcc-3.* & -m64 option

[Kiyoshi KANAZAWA]

> Everything is OK now.
> I tested all the combination of
> (gcc-4.6.3, gcc-4.4.7, gcc-4.6.3), (-m32, -m64), (gc-7.1, gc-7.2alpha6).

wong: (gcc-4.6.3, gcc-4.4.7, gcc-4.6.3)
correct  (gcc-3.4.3, gcc-4.4.7, gcc-4.6.3)

--- Kiyoshi <yoi_no_myoujou at yahoo.co.jp>