[patch] add apple specific i386 cpu

[Uros Bizjak]

Eric Christopher wrote:

>>> Right, this is the way I'll go, one question though:
>>>
>>> Why are sahf and cx16 (and a couple of other cpu features) vars 
>>> instead of masks? Makes it hard to turn on.
>>
>> Because they don't require mask bits in definition tables for 
>> builtins (and we are out of mask bits...).
>
> Suggestion of how to turn it on then?

They are intended to be switched on command line by -mcx16 and -msahf.

Uros.