OpenID service modifies PHP include path what has negative impact on autoloader
The method tx_openid_sv1::includePHPOpenIDLibrary() modifies the PHP include path. Thus, functionalities that are addressed there in OpenID cannot make proper use of the autoloader (e.g. this also effects error handling and reporting).
Can be easily reproduced with PHP 5.3 since the OpenID lib uses some "old-school" PHP style that won't work in PHP 5.3 anymore and would trigger the TYPO3 eror/exception handler.
(issue imported from #M12494)