[RFC] mips gdb fails to detect o32

[Andrew Cagney]

> Um, won't the final:
>> 
>>         if (mips_abi == MIPS_ABI_UNKNOWN)
>>           mips_abi = MIPS_ABI_032;
>> 
>> kick in?
> 
> 
> No, not if MIPS_ABI_DEFAULT is defined....
> 
Undefine it .... :-)

I never did like it.

Andrew