Currently uname states:

-m      print the machine hardware name. $MACHINE
-p      print the machine processor architecture name. $MACHINE_ARCH

In most platforms they are the same right now, but I think that should be
fixed.

On solaris -m reports sun4, sun4c, sun4m, sun4d, sun4u and -p reports sparc.
We report sparc always.

The problem is that our make uses machine instead of machine_arch to
determine what to build for. 

What is TRT to do?

BTW this change should be propagated to the i386 for example and have -m
report i386, i486, i586, i686... and -p be i386...

christos