Log Message:
Update php70 to 7.0.21.

06 Jul 2017 PHP 7.0.21

- Core:
  . Fixed bug #74738 (Multiple [PATH=] and [HOST=] sections not properly
    parsed). (Manuel Mausz)
  . Fixed bug #74658 (Undefined constants in array properties result in broken
    properties). (Laruence)
  . Fixed misparsing of abstract unix domain socket names. (Sara)
  . Fixed bug #74101, bug #74614 (Unserialize Heap Use-After-Free (READ: 1) in
    zval_get_type). (Nikita)
  . Fixed bug #74111 (Heap buffer overread (READ: 1) finish_nested_data from
    unserialize). (Nikita)
  . Fixed bug #74603 (PHP INI Parsing Stack Buffer Overflow Vulnerability).
    (Stas)
  . Fixed bug #74819 (wddx_deserialize() heap out-of-bound read via
    php_parse_date()). (Derick)

- DOM:
  . Fixed bug #69373 (References to deleted XPath query results). (ttoohey)

- GD:
  . Fixed bug #74435 (Buffer over-read into uninitialized memory). (cmb)

- Intl:
  . Fixed bug #73473 (Stack Buffer Overflow in msgfmt_parse_message). (libnex)
  . Fixed bug #74705 (Wrong reflection on Collator::getSortKey and
    collator_get_sort_key). (Tyson Andre, Remi)
  . Fixed bug #73634 (grapheme_strpos illegal memory access). (Stas)

- Mbstring:
  . Add oniguruma upstream fix (CVE-2017-9224, CVE-2017-9226, CVE-2017-9227,
    CVE-2017-9228, CVE-2017-9229) (Remi, Mamoru TASAKA)

- OCI8:
 . Add TAF callback (PR #2459). (KoenigsKind)

- Opcache:
  . Fixed bug #74663 (Segfault with opcache.memory_protect and
    validate_timestamp). (Laruence)

- OpenSSL:
  . Fixed bug #74651 (negative-size-param (-1) in memcpy in zif_openssl_seal()).
    (Stas)

- PCRE:
  . Fixed bug #74087 (Segmentation fault in PHP7.1.1(compiled using the bundled \ 
PCRE library)).
    (Stas)

- PDO_OCI:
  . Support Instant Client 12.2 in --with-pdo-oci configure option.
    (Tianfang Yang)

- Reflection:
  . Fixed bug #74673 (Segfault when cast Reflection object to string with
    undefined constant). (Laruence)

- SPL:
  . Fixed bug #74478 (null coalescing operator failing with SplFixedArray).
    (jhdxr)

- Standard:
  . Fixed bug #74708 (Invalid Reflection signatures for random_bytes and
    random_int). (Tyson Andre, Remi)
  . Fixed bug #73648 (Heap buffer overflow in substr). (Stas)

- FTP:
  . Fixed bug #74598 (ftp:// wrapper ignores context arg). (Sara)

- PHAR:
  . Fixed bug #74386 (Phar::__construct reflection incorrect). (villfa)

- SOAP
  . Fixed bug #74679 (Incorrect conversion array with WSDL_CACHE_MEMORY).
    (Dmitry)

- Streams:
  . Fixed bug #74556 (stream_socket_get_name() returns '\0'). (Sara)