configure.ac: Add aarch64-*-freebsd*.

configure.ac: Add aarch64-*-freebsd*.

toplevel:

2016-10-10  Andreas Tobler <andreast@gcc.gnu.org>

    * configure.ac: Add aarch64-*-freebsd*.
    * configure: Regenerate.

gcc:

2016-10-10  Andreas Tobler  <andreast@gcc.gnu.org>

    * config.gcc: Add aarch64-*-freebsd* support.
    * config.host: Likewise.
    * config/aarch64/aarch64-freebsd.h: New file.
    * config/aarch64/t-aarch64-freebsd: Ditto.

libgcc:

2016-10-10  Andreas Tobler  <andreast@gcc.gnu.org>

    * config.host: Add support for aarch64-*-freebsd*.

From-SVN: r240949