Require binutils 2.25 or later to build glibc

[Florian Weimer]

On 06/20/2017 10:45 PM, Joseph Myers wrote:
> This patch implements a requirement of binutils >= 2.25 (up from 2.22)
> to build glibc.  Tests for 2.24 or later on x86_64 and s390 are
> removed.  It was already the case, as indicated by buildbot results,
> that 2.24 was too old for building tests for 32-bit x86 (produced
> internal linker errors linking elf/tst-gnu2-tls1mod.so).  I don't know
> if any configure tests for binutils features are obsolete given the
> increased version requirement.

Can we make 2.25.1 the minimum version?  Then we can drop the check in
sysdeps/arm/configure.ac, too.

Thanks,
Florian