Merge branch 'PHP-7.0' into PHP-7.1

diff --cc NEWS
index a550ddaac718a8a5eae0c22444983ff974b59aba,10dbc79eb74c517f25dc92ff8abe3ea9bcdc6a59..6606e88d8c774cac49bfe53eb3877cd1dc3c3ca7
--- 1/NEWS
--- 2/NEWS
+++ b/NEWS
@@@ -14,9 -31,25 +14,10 @@@ PH
    . Fixed bug #53504 (imagettfbbox gives incorrect values for bounding box).
      (Mark Plomer, cmb)
    . Fixed bug #73157 (imagegd2() ignores 3rd param if 4 are given). (cmb)
+   . Fixed bug #73155 (imagegd2() writes wrong chunk sizes on boundaries). (cmb)
  
 -- Mbstring:
 -  . Fixed bug #66797 (mb_substr only takes 32-bit signed integer). (cmb)
 -  . Fixed bug #66964 (mb_convert_variables() cannot detect recursion) (Yasuo)
 -  . Fixed bug #72992 (mbstring.internal_encoding doesn't inherit default_charset).
 -    (Yasuo)
 -
 -- Mysqlnd:
 -  . Fixed bug #72489 (PHP Crashes When Modifying Array Containing MySQLi Result
 -    Data). (Nikita)
 -
 -- Opcache:
 -  . Fixed bug #72982 (Memory leak in zend_accel_blacklist_update_regexp()
 -    function). (Laruence)
 -
 -- OpenSSL:
 -  . Fixed bug #73072 (Invalid path SNI_server_certs causes segfault).
 -    (Jakub Zelenka)
 +- JSON:
 +  . Fixed bug #73113 (Segfault with throwing JsonSerializable). (julien)
  
  - PCRE:
    . Fixed bug #73121 (Bundled PCRE doesn't compile because JIT isn't supported