Nios2 dynobj handling fixes

[Sandra Loosemore]

On 02/28/2017 02:23 AM, Alan Modra wrote:
> On Tue, Feb 28, 2017 at 12:38:03AM -0700, Sandra Loosemore wrote:
>> Anyway, I've verified that I get working executables again with this patch,
>> and I've kicked off some more thorough testing to run overnight.
>
> The burning question is whether you want the patch on master to be
> applied to the branch, or to revert the nios parts of 17026142e?

Test results look good so far, so yes, I think the patch is good for the 
branch.  It'll take several more hours for glibc testing to finish but 
the gas/ld/binutils and gcc/g++/libstdc++ testsuites are all OK.

-Sandra