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

# By Adam Harvey
# Via Adam Harvey
* 'PHP-5.4' of https://git.php.net/repository/php-src:
  Tinker with the wording of the short_open_tag description.
  Handle CLI server request headers case insensitively.
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
Fix the broken sh syntax in ext/imap/config.m4.

Patch by ryotakatsuki at gmail dot com. Fixes bug #65721 (configure script
broken in 5.5.4 and 5.4.20 when enabling imap).
Merge branch 'PHP-5.4' into PHP-5.5

* PHP-5.4:
  Fix the broken sh syntax in ext/imap/config.m4.