Merge branch 'PHP-7.1' into PHP-7.2

* PHP-7.1:
  Always use ZEND_SECURE_ZERO() when cleaning up data
  bump versions after release

diff --cc ext/hash/hash_sha3.c
Simple merge

diff --cc ext/hash/hash_snefru.c
Simple merge

diff --cc ext/standard/sha1.c
Simple merge