>The :C/^mips.*/mips/ rule is for the funky stuff like src/libc/arch/ where
>the two architectures can share source code.  

Um, Todd, they are _not_ two architectures. They're the same chips, so
they're the same architecture.  End of story.

The only difference is the endian-ness, which is handled by LWHI/LWLO
macros and a couple of endian #ifdefs.  They should be shared
_everywhere_ there's an arch/ subdir.  That's the way mips(32) code
has always been designed.