PATCH: Fix linker plugin support for gnu linker

[Ian Lance Taylor]

"H.J. Lu" <hjl.tools@gmail.com> writes:

> I guess this is another "unusual case":
>
> http://sourceware.org/bugzilla/show_bug.cgi?id=12370
>
> With 2 stage linking, it just works.

Yes, that is another unusual case, and it's only an issue of program
size, not correctness.  And, yes, it can be made to work with 1 stage
linking with the plugin.

Ian