3.3 PATCH: Handle mips gas 2.13 -mdebug switch

[Eric Christopher]

> Absolutely.  It was only under pressure that I left the support in GAS
> at all, as I'm sure Eric remembers :)  GDB behaves much, much better
> with DWARF-2 or even elf stabs than it does with the mdebug reader.
> 

Yup. I'd like to remove all of that, but I (or someone) will need to
look at the supported targets and make sure that all of them can be
moved over.

-eric

-- 
I will not grease the monkey bars