Add Toshiba TX49 support

[cgd@broadcom.com]

At Mon, 11 Nov 2002 21:22:06 +0000 (UTC), "Nathan Sidwell" wrote:
> I picked -m4900 as the cpu flag,

Err, "we don't do machine flags like that anymore."  (looks like
you've already set it up to do -march/-mtune.)

Is it really called the r4900 (rather than tx4900)?  If the latter,
you probably should name it the latter.


(I didn't carefully check the opcodes changes...)


cgd