bug #18049 [Validator] Fix the locale validator so it treats a locale alias as a valid locale (jakzal)

This PR was merged into the 2.3 branch.

Discussion
----------

[Validator] Fix the locale validator so it treats a locale alias as a valid locale

| Q             | A
| ------------- | ---
| Branch        | 2.3
| Bug fix?      | yes
| New feature?  | no
| BC breaks?    | no
| Deprecations? | no
| Tests pass?   | yes
| Fixed tickets | #12583
| License       | MIT
| Doc PR        | -

Commits
-------

fbb12d8 [Validator] Fix the locale validator so it treats a locale alias as a valid locale

src/Symfony/Component/Validator/Constraints/LocaleValidator.php

@@ -38,8 +38,9 @@ class LocaleValidator extends ConstraintValidator
 
         $value = (string) $value;
         $locales = Intl::getLocaleBundle()->getLocaleNames();
+        $aliases = Intl::getLocaleBundle()->getAliases();
 
-        if (!isset($locales[$value])) {
+        if (!isset($locales[$value]) && !in_array($value, $aliases)) {
             $this->context->addViolation($constraint->message, array(
                 '{{ value }}' => $this->formatValue($value),
             ));

src/Symfony/Component/Validator/Tests/Constraints/LocaleValidatorTest.php

@@ -61,6 +61,7 @@ class LocaleValidatorTest extends AbstractConstraintValidatorTest
             array('pt'),
             array('pt_PT'),
             array('zh_Hans'),
+            array('fil_PH'),
         );
     }
 

src/Symfony/Component/Validator/composer.json

@@ -22,7 +22,7 @@
     "require-dev": {
         "doctrine/common": "~2.3",
         "symfony/http-foundation": "~2.1",
-        "symfony/intl": "~2.3",
+        "symfony/intl": "^2.3.21",
         "symfony/yaml": "~2.0,>=2.0.5",
         "symfony/config": "~2.2"
     },