Merge branch 'PHP-5.5' of git.php.net:php-src into PHP-5.5

* 'PHP-5.5' of git.php.net:php-src: (107 commits)
  Typo fix: umknown -> unknown
  add news entry about FPM backlog change
  Fix bug #66008
  updated libs_versions.txt
  Update NEWS
  Update NEWS
  Fixed Bug 64760 var_export() does not use full precision for floating-point numbers
  add bundled libzip LICENSE, as required by BSD License terms
  - Updated to version 2013.8 (2013h)
  Use zval* instead of zval**
  Increased limit for opcache.max_accelerated_files to 1,000,000. (Chris)
  Improved performance of array_merge() by eliminating useless copying
  Improved performance of func_get_args() by eliminating useless copying
  Link to more readmes
  increase backlog to the highest value everywhere
  Update NEWS
  Fixed bug #65950 Field name truncation if the field name is bigger than 32 characters
  - Updated to version 2013.7 (2013g)
  Increment version number, since this will be 5.5.6.
  Added Zend Debugger to the note about the load order (by trash4you at online dot de)
  ...
Merge branch 'PHP-5.5' of git.php.net:php-src into PHP-5.5

* 'PHP-5.5' of git.php.net:php-src:
  Add a couple more test cases to parse_url() tests
  fix missing change from 'tcp_socket' to the more common 'server'
  fix many parallel test issues
  Cleanup temp test file
  Revert "Fixed issue #115 (path issue when using phar)."
  Remove outdate codes, make it clearer, although just a bit..
  Update NEWS
  Fixed Bug #66034 (Segmentation Fault when constructor of PDO statement throws an exception)
  Fixed coredump due to abnormal implemention of phar
  Typo fix: umknown -> unknown
  Fix bug #66008
  5.4.23-dev
  remove "PHP 6" staff