Merge branch 'PHP-7.0' into PHP-7.1

diff --cc NEWS
index 6606e88d8c774cac49bfe53eb3877cd1dc3c3ca7,46fddef86f265887f42495c5ed70b84c335752db..6481b0208a43874081a0f47ac5519288264be23d
--- 1/NEWS
--- 2/NEWS
+++ b/NEWS
@@@ -15,9 -32,26 +15,11 @@@ PH
      (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)
+   . Fixed bug #73159 (imagegd2(): unrecognized formats may result in corrupted
+     files). (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