Merge branch 'PHP-5.4' of https://git.php.net/repository/php-src into PHP-5.4

# By David Soria Parra (6) and others
# Via David Soria Parra
* 'PHP-5.4' of https://git.php.net/repository/php-src:
  Revert "EmptyIterator now implements Countable; fixes bug 60577"
  RFC 6598 reserved ip range starts at 100.64.0.0
  fix a very rare case of use of uninitialized value combined with a memleak
  NEWS for added reserved ip addresses according to RFC 6598
  Add RFC 6598 IPs to reserved addresses
  NEWS for #60577
  NEWS for bug #64441
  Fix bug #64441 (FILTER_VALIDATE_URL rejects fully qualified domain names)
  EmptyIterator now implements Countable; fixes bug 60577
  News for bugfix #64157
  Bug 64157 Changed error message to make sense