[patch] fix OPTIONS_DEFAULT_SPEC for i386

[Eric Christopher]

Eric Christopher wrote:
> 
>> So, the choices are:
>>
>> a) reorder the specs (what the patch does)
>> b) depend tune and cpu only on tune and cpu, not arch.
>>
>> OK? Choice b? Some choice I haven't noticed?
>>
> 
> As a followup btw, I think that choice b) is more obviously correct.
> 

Umm.. nevermind. Removing arch on b) makes it not correct since -march 
would not set -mtune by default.

-eric