RFA: Remove elf32_arm_relocs_copied

[Richard Sandiford]

Richard Sandiford <richard.sandiford@linaro.org> writes:
> This patch replaces elf32_arm_relocs_copied with the target-independent
> elf_dyn_relocs structure.  The two structures are identical except for
> the name of the "asection *" field ("section" vs. "sec").
>
> I'm currently looking at adding STT_GNU_IFUNC support for ARM, and this
> patch is a prerequisite for that.  It feels like a useful cleanup in its
> own right, though, so I thought I might as well post it now.
>
> Tested on arm-linux-gnueabi.  It's pretty mechanical, but I don't want
> to trample all over an actively-maintained port, so: OK to install?

In the end I decided this was purely janitorial, so I went ahead
and applied it.  Same for the section cache variables patch that
I posted at the same time.

Richard