Newlib Update for RTEMS 4.12

[Chris Johns]

On 01/03/2017 23:37, Sebastian Huber wrote:
> I updated the RSB to use the Newlib 2.5.0.20170228 snapshot. All users
> of the RTEMS master are encouraged to update their tool chains. This
> tool set (Binutils, GCC, Newlib) is the final one for the RTEMS 4.12
> release from my point of view. We should get now the RTEMS master ready
> for the release.

The 4.12 tools are broken on FreeBSD 11.0:

https://sourceware.org/bugzilla/show_bug.cgi?id=21206

This is a blocker for a release.

Chris