Patch some configuration capabilities into PHPUnit

Bootstrap.php

<?php
$prefixPath = 'tests';
/*
 * Load the user-defined test configuration file, if it exists; otherwise, load
 * the default configuration.
 */
if (is_readable($prefixPath . DIRECTORY_SEPARATOR . 'TestConfiguration.php')) {
    require_once $prefixPath . DIRECTORY_SEPARATOR . 'TestConfiguration.php';
} else {
    require_once $prefixPath . DIRECTORY_SEPARATOR . 'TestConfiguration.php.dist';
}