Merge branch 'PHP-7.1'

* PHP-7.1:
  NEWS for oniguruma
  Patch from the upstream git https://github.com/kkos/oniguruma/issues/60 (CVE-2017-9228)
  Patch from the upstream git https://github.com/kkos/oniguruma/issues/59 (CVE-2017-9229) b690371bbf97794b4a1d3f295d4fb9a8b05d402d Modified for onig 5.9.6
  Patch from the upstream git https://github.com/kkos/oniguruma/issues/58 (CVE-2017-9227)
  Patch from the upstream git https://github.com/kkos/oniguruma/issues/57 (CVE-2017-9224)
  Patch from the upstream git https://github.com/kkos/oniguruma/issues/55 (CVE-2017-9226) b4bf968ad52afe14e60a2dc8a95d3555c543353a Modified for onig 5.9.6 f015fbdd95f76438cd86366467bb2b39870dd7c6 Modified for onig 5.9.6