[RFA] [pei-386] prevent ld (auto-import) from generating broken code

[DJ Delorie]

sophisticalted -> sophisticated

and make sure the error message example in the docs matches the
printed message ;-)

" the sum of two constants," how about " the sum of two constants
(Win32 import tables only allow one)," so that it's clear this is a
fundamental limitation, not just a lazy GNU coder.