[patch] Fix ld to match .data.rel.ro sections more carefully

[Cary Coutant]

>> Unfortunately, this still doesn't handle the case where we have a
>> variable named simply "ro" that happens to have a relocation. That
>> will get placed into a ".data.rel.ro" section that is
>> indistinguishable from a real ".data.rel.ro" section generated without
>> -fdata-sections. Does anyone have any suggestions for how to handle
>> this?
>
> Call it a gcc bug?

Fine with me!

-cary