PHP upgrade to 5.2.6

We are now using php version 5.2.6 for your security / increased stability.

Security Enhancements and Fixes in PHP 5.2.6:

* Fixed possible stack buffer overflow in the FastCGI SAPI identified by Andrei Nigmatulin.
* Fixed integer overflow in printf() identified by Maksymilian Aciemowicz.
* Fixed security issue detailed in CVE-2008-0599 identified by Ryan Permeh.
* Fixed a safe_mode bypass in cURL identified by Maksymilian Arciemowicz.
* Properly address incomplete multibyte chars inside escapeshellcmd() identified by Stefan Esser.
* Upgraded bundled PCRE to version 7.6

Key enhancements in PHP 5.2.6 include:

* Fixed two possible crashes inside the posix extension.
* Fixed bug #44069 (Huge memory usage with concatenation using . instead of .=)
* Fixed bug #44141 (private parent constructor callable through static function).
* Fixed bug #43589 (a possible infinite loop in bz2_filter.c).
* Fixed bug #43450 (Memory leak on some functions with implicit object __toString() call).
* Fixed bug #43201 (Crash on using uninitialized vals and __get/__set).
* Fixed bug #42978 (mismatch between number of bound params and values causes a crash in pdo_pgsql).
* Fixed bug #42937 (__call() method not invoked when methods are called on parent from child class).
* Fixed bug #42736 (xmlrpc_server_call_method() crashes).
* Fixed bug #42369 (Implicit conversion to string leaks memory).
* Fixed bug #41562 (SimpleXML memory issue).
* Over 120 bug fixes.

source: php.net