[rfc] display vector types using vector_size syntax

[Andrew Burgess]

On 10/09/2012 11:06 PM, Joel Brobecker wrote:
>> Andrew> I'd like to change the behaviour to this:
>> Andrew> (gdb) ptype vector
>> Andrew> type = char ((vector_size(4)))
>> Andrew> (gdb) whatis vector
>> Andrew> type = char ((vector_size(4)))
>>
>> Seems reasonable to me.
>
> Just a thought: How about
>
>      type = char __attribute__ ((vector_size(4)))
>
> ?
>
> It know it's a lot more verbose, but the later speaks a lot more
> to me than the original proposal...

I only dropped this to avoid clutter, but I don't really mind either way.

I'll give it a couple more days for people to reply, then commit a 
version with "__attibute__".

Thanks,

Andrew