Log Message:
Update php-xdebug to 2.3.3.

Fri, Jun 19, 2015 - xdebug 2.3.3

= Fixed bugs:

- Fixed issue #1130: Escaping issues with docrefs and HTML characters in
error messages
- Fixed issue #1133: PDO exception code value type is changed
- Fixed issue #1137: Windows does not support %zu formatting for sprintf
- Fixed issue #1140: Tracing with __debugInfo() crashes Xdebug due to a stack
overflow
- Fixed issue #1148: Can't disable max_nesting_function
- Fixed issue #1151: Crash when another extension calls call_user_function()
during RINIT

- Fixed crash with code coverage (Antony Dovgal)
- Fixed usage of virtual_file_ex and STR_FREE (Remi Collet)
- Reset overloaded opcodes at the end of each request (Eran Ifrah)

= Improvements:

- Fixed issue #686: Not possible to inspect SplObjectStorage instances with
Xdebug
- Fixed issue #864: No attributes are shown if an object extends
ArrayIterator
- Fixed issue #996: Can't evaluate property of class that extends ArrayObject
- Fixed issue #1134: Allow introspection of ArrayObject implementation's
internal storage
- Get rid of setlocale hack, by using %F instead of %f (and speed up tracing
by 15-20%)