[i386] pni => sse3 -- GCC 3.3.3 related

[Jim Wilson]

H. J. Lu wrote:
> 2004-02-06  H.J. Lu  <hongjiu.lu@intel.com>
> 	* doc/invoke.texi: Mention SSE2 and SSE3.
> 	* config/i386/i386.h: Deprecate -mpni/-mno-pni.
> 2004-02-03  Kelley Cook  <kcook@gcc.gnu.org>
> 	* config/i386/i386.c: Rename pni to sse3.
 >	...

OK for mainline and 3.4.  3.3 would be Gaby's call.

I see that you still define __PNI__.  Do we really need that?  Maybe 
there should be some planned obsolescence for that?  I.e., we continue 
to support it for now in 3.3 but not in 3.4, or we support it in 3.4 but 
not in 3.5?
-- 
Jim Wilson, GNU Tools Support, http://www.SpecifixInc.com