Merge branch 'PHP-7.1'

* PHP-7.1:
  Updated reference-counting inferece rules. The previous rules refected PHP-5 behavior and were completely wrong for PHP-7. (e.g. scalars don't have reference counters at all). This change shouldn't affect anything, because results of this inference are not used yet.
  Fix NEWS after re-roll of RC3

diff --cc ext/opcache/Optimizer/zend_inference.c
Simple merge

diff --cc ext/opcache/Optimizer/zend_ssa.c
Simple merge