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

[DJ Delorie]

> Second, we're merely arguing about which of two alternatives to 
> *recommend*, while still presenting BOTH alternatives -- in the 
> documentation.  (Unless you're arguing for eliminating all references to 
> my preferred alternative?)

Would it be reasonable to refer to the manual in the error message?  I
think we can document all the known workarounds (and dwarbacks of
each), but we can't do it clearly if we're limited to doing it in the
error message.