Merge branch 'PHP-5.6' of git.php.net:php-src into PHP-5.6

* 'PHP-5.6' of git.php.net:php-src: (142 commits)
  Fixed bug #68351 (PDO::PARAM_BOOL and ATTR_EMULATE_PREPARES misbehaving)
  Update NEWS
  Fixed bug #68331 - This was partial patch for https://wiki.php.net/rfc/session-lock-ini
  fix dir separator in test
  arg1-3 are not variable names to use; removed useless buffer variable
  update NEWS
  Fix bug #63595 GMP memory management conflicts with other libraries using GMP
  Initialize the offset table - PCRE may sometimes miss offsets
  set default response code to 200
  set default response code to 200
  set default response code to 200
  Fixed bug #66584 Segmentation fault on statement deallocation
  Add credit
  fix ZTS build
  Added PGSQL_TEST_CONNSTR env var support for ext/pgsql tests
  Fixed bug #67462 PDO_PGSQL::beginTransaction() wrongly throws exception when not in transaction
  Fixed Bug #68104 (Segfault while pre-evaluating a disabled function)
  Temporarily disable wait/xml protocol...
  don't try to send in the test results until we restored qa.php.net
  Fix uninitialized value...
  ...
Merge branch 'PHP-5.6' of git.php.net:php-src into PHP-5.6

* 'PHP-5.6' of git.php.net:php-src:
  Update NEWS
  Fixed bug #68370 ("unset($this)" can make the program crash)
  Fix opcache.revalidate_freq per-request behavior
  Partial fix for bug #68365 (zend_mm_heap corrupted after memory overflow in zend_hash_copy)
  Fixed bug #68351 (PDO::PARAM_BOOL and ATTR_EMULATE_PREPARES misbehaving)
Fix skipif test here