PATCH: 2 stage BFD linker for LTO plugin

[Cary Coutant]

>>> I see no particular reason why that should be the case.  The issues are
>>> conceptually simple.
>>
>> I'd like to a gold implementation which works on all known cases.

You'd like to what?

> BTW, gold LTO plugin miscompiled 416.gamess in SPEC CPU 2006:
>
> http://www.sourceware.org/bugzilla/show_bug.cgi?id=12244
>
> BFD linker plugin is OK.

I can't tell for sure from either bug report, but is this the -lm
problem discussed earlier in this thread? The gcc driver needs to add
-lm as a pass-through library when -lm is on the command line.

-cary