[Intl] Added scripts to test the compatibility of various versions of symfony/icu with the ICU version installed on the system

src/Symfony/Component/Intl/Resources/bin/test-compat.php

@@ -0,0 +1,47 @@
+<?php
+
+use Symfony\Component\Intl\Intl;
+
+require_once __DIR__ . '/common.php';
+require_once __DIR__ . '/autoload.php';
+
+if (1 !== $GLOBALS['argc']) {
+    bailout(<<<MESSAGE
+Usage: php test-compat.php
+
+Tests the compatibility of the current ICU version (bundled in ext/intl) with
+different versions of symfony/icu.
+
+For running this script, the intl extension must be loaded and all vendors
+must have been installed through composer:
+
+    composer install --dev
+
+MESSAGE
+    );
+}
+
+echo LINE;
+echo centered("ICU Compatibility Test") . "\n";
+echo LINE;
+
+echo "Your ICU version: " . Intl::getIcuVersion() . "\n";
+
+echo "Compatibility with symfony/icu:\n";
+
+$branches = array(
+    '1.1.x',
+    '1.2.x',
+);
+
+cd(__DIR__ . '/../../vendor/symfony/icu/Symfony/Component/Icu');
+
+foreach ($branches as $branch) {
+    run('git checkout ' . $branch . ' 2>&1');
+
+    exec('php ' . __DIR__ . '/util/test-compat-helper.php > /dev/null 2> /dev/null', $output, $status);
+
+    echo "$branch: " . (0 === $status ? "YES" : "NO") . "\n";
+}
+
+echo "Done.\n";

src/Symfony/Component/Intl/Resources/bin/util/test-compat-helper.php

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+<?php
+
+use Symfony\Component\Icu\IcuData;
+use Symfony\Component\Intl\ResourceBundle\Reader\BinaryBundleReader;
+
+require_once __DIR__ . '/../common.php';
+require_once __DIR__ . '/../autoload.php';
+
+$reader = new BinaryBundleReader();
+
+$reader->read(IcuData::getResourceDirectory() . '/curr', 'en');
+$reader->read(IcuData::getResourceDirectory() . '/lang', 'en');
+$reader->read(IcuData::getResourceDirectory() . '/locales', 'en');
+$reader->read(IcuData::getResourceDirectory() . '/region', 'en');