[Bulk] Snow Leopard +universal necessity

[Jeremy Huddleston]

>> Not installing dependencies universal causes issues like this:
>>
>> http://trac.macports.org/ticket/20912
>
> Its just my opinion of course but I intensely dislike the idea of  
> being forced to build all of my numerous ports "universal" instead  
> of just fixing the ones that need to be 32 bit.

While some (xulrunner, firefox) just need new inline-asm to be written  
for 64bit support, others (wine) may *NEVER* actually work in 64bit.   
It may be the case that users need a 32bit wine for win32 and a 64bit  
wine for win64.  ... so it's not really trivially fixable when it is  
by design.