RFC & patch: Rework MIPS command-line handling

[Eric Christopher]

> 
> > I'm wondering if the right thing to do here is have flags like
> > -mstrict-abi=XXX, which also set the ISA type, or -mabi=strict-XXX...
> 
> I wonder whether it would be clearer to have a special -march
> argument.  Something like -mabi=XXX -march=from-abi?  It should
> make the multilib matching easier as well.

This isn't a bad idea. Maybe a -mdeduce-arch option...

-eric

-- 
I will not grease the monkey bars