minor symfony#24102 Create directories recursively in the PHPUnit bridge (stof)

This PR was merged into the 3.3 branch.

Discussion
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Create directories recursively in the PHPUnit bridge

| Q             | A
| ------------- | ---
| Branch?       | 3.3
| Bug fix?      | yes
| New feature?  | no
| BC breaks?    | no
| Deprecations? | no
| Tests pass?   | yes
| Fixed tickets | n/a
| License       | MIT
| Doc PR        | n/a

If the target directory is also missing its parent directory, we need to perform a recursive creation, otherwise we get weird failures later.

Commits
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0caeeff Create directories recursively in the PHPUnit bridge

Author: fabpot

src/Symfony/Bridge/PhpUnit/bin/simple-phpunit

@@ -41,7 +41,7 @@ $COMPOSER = file_exists($COMPOSER = $oldPwd.'/composer.phar') || ($COMPOSER = rt
 if (!file_exists("$PHPUNIT_DIR/phpunit-$PHPUNIT_VERSION/phpunit") || md5_file(__FILE__)."\n".getenv('SYMFONY_PHPUNIT_REMOVE') !== @file_get_contents("$PHPUNIT_DIR/.$PHPUNIT_VERSION.md5")) {
     // Build a standalone phpunit without symfony/yaml nor prophecy by default
 
-    @mkdir($PHPUNIT_DIR);
+    @mkdir($PHPUNIT_DIR, 0777, true);
     chdir($PHPUNIT_DIR);
     if (file_exists("phpunit-$PHPUNIT_VERSION")) {
         passthru(sprintf('\\' === DIRECTORY_SEPARATOR ? '(del /S /F /Q %s & rmdir %1$s) >nul': 'rm -rf %s', "phpunit-$PHPUNIT_VERSION"));