[GOLD][PATCH] Set SHF_LINK_ORDER flags of ARM EXIDX sections.

[Cary Coutant]

> Here is a new patch.  I changed the code in layout.cc so that
> SHF_LINK_ORDER is not filter in a relocatable link.  I also added a
> check in the ARM back-end to warn about EXIDX input sections without
> SHF_LINK_ORDER flags.

Thanks, that looks better!

As a separate issue, there may be a couple of other flags we don't
want to clear for -r links as well. I'll take a closer look at that.

-cary