credits file for phpdbg
Merge branch 'PHP-5.6' of https://git.php.net/repository/php-src into PHP-5.6

* 'PHP-5.6' of https://git.php.net/repository/php-src:
  Fixed credits in phpdbg.* files
  Added breaking upon fatal-ish error
  credits file for phpdbg
  Fixed credits in phpdbg.* files
  reformat
  credits file
update credits headers