firmware specification

[Yoshinori K. Okuji]

So far, we've been using the triples (such as i386-pc-gnu) to specify both a 
CPU and a firmware. I feel that this is not appropriate. The vendor part of 
the triple can imply what firmware is used, but not always. So, for example, 
I invented i386-efi for EFI. Since the specification of the triple affects 
the choice of a compiler, I suspect that our usage is wrong.

So I'd like to add a configuration option to specify a firmware type instead 
of using a vendor name. When the user does not specify her firmware 
explicitly, configure can guess the firmware from the CPU and the vendor.

Is there any objection?

Okuji