Altivec support in PSIM

[Andrew Cagney]

> I did not get any answer to my question on Altivec support in psim, so I try
> again:
> 
> I am interested in Altivec instruction support in gdb and psim. I have searched
> a little on the web and seen that a guy called Matthew Green has contributed
> something in this area. I don't find it in the newest gdb releases, however.
> When do you expect to include Matthews contribution?

I'm going to see about putting up a snapshot of the relevant code.  As 
for integrating this, it will start after I've dis-entangled the MIPS 
and its (C) mess.

Andrew