AArch64 patch pings

[Richard Sandiford]

Ping for a few AArch64 patches:

    [61/77] Use scalar_int_mode in the AArch64 port
    https://gcc.gnu.org/ml/gcc-patches/2017-07/msg00701.html

    [75/77] Use scalar_mode in the AArch64 port
    https://gcc.gnu.org/ml/gcc-patches/2017-07/msg00715.html

    [AArch64] Remove use of wider vector modes
    https://gcc.gnu.org/ml/gcc-patches/2017-08/msg01249.html

    [AArch64] Rename cmp_result iterator
    https://gcc.gnu.org/ml/gcc-patches/2017-08/msg01250.html

    [AArch64] Tweak aarch64_classify_address interface
    https://gcc.gnu.org/ml/gcc-patches/2017-08/msg01251.html

    [AArch64] Tighten address register subreg checks
    https://gcc.gnu.org/ml/gcc-patches/2017-08/msg01252.html

Thanks,
Richard