Nios2 dynobj handling fixes

[Alan Modra]

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?

-- 
Alan Modra
Australia Development Lab, IBM