minor #13469 Fix docblocks to comments (keradus)

This PR was squashed before being merged into the 2.3 branch (closes #13469).

Discussion
----------

Fix docblocks to comments

| Q             | A
| ------------- | ---
| Bug fix?      | no
| New feature?  | no
| BC breaks?    | no
| Deprecations? | no
| Tests pass?   | ?
| Fixed tickets | N/A
| License       | MIT
| Doc PR        | N/A

Change docblock into comment when it's not a proper docblock.

Commits
-------

779926a Fix docblocks to comments

src/Symfony/Bridge/Propel1/Form/ChoiceList/ModelChoiceList.php

@@ -178,7 +178,7 @@ class ModelChoiceList extends ObjectChoiceList
             return array();
         }
 
-        /**
+        /*
          * This performance optimization reflects a common scenario:
          * * A simple select of a model entry.
          * * The choice option "expanded" is set to false.
@@ -233,7 +233,7 @@ class ModelChoiceList extends ObjectChoiceList
         }
 
         if (!$this->loaded) {
-            /**
+            /*
              * This performance optimization assumes the validation of the respective values will be done by other means.
              *
              * It correlates with the performance optimization in {@link ModelChoiceList::getChoicesForValues()}

src/Symfony/Component/HttpFoundation/Session/Storage/Handler/NativeSessionHandler.php

@@ -11,11 +11,8 @@
 
 namespace Symfony\Component\HttpFoundation\Session\Storage\Handler;
 
-/**
- * Adds SessionHandler functionality if available.
- *
- * @see http://php.net/sessionhandler
- */
+// Adds SessionHandler functionality if available.
+// @see http://php.net/sessionhandler
 if (PHP_VERSION_ID >= 50400) {
     class NativeSessionHandler extends \SessionHandler
     {

src/Symfony/Component/HttpKernel/Exception/FatalErrorException.php

@@ -11,7 +11,7 @@
 
 namespace Symfony\Component\HttpKernel\Exception;
 
-/**
+/*
  * Fatal Error Exception.
  *
  * @author Konstanton Myakshin <koc-dp@yandex.ru>

src/Symfony/Component/HttpKernel/Exception/FlattenException.php

@@ -11,7 +11,7 @@
 
 namespace Symfony\Component\HttpKernel\Exception;
 
-/**
+/*
  * FlattenException wraps a PHP Exception to be able to serialize it.
  *
  * Basically, this class removes all objects from the trace.

src/Symfony/Component/Serializer/Encoder/XmlEncoder.php

@@ -313,11 +313,9 @@ class XmlEncoder extends SerializerAwareEncoder implements EncoderInterface, Dec
                 } elseif ($key === '#') {
                     $append = $this->selectNodeType($parentNode, $data);
                 } elseif (is_array($data) && false === is_numeric($key)) {
-                    /**
-                     * Is this array fully numeric keys?
-                     */
+                    // Is this array fully numeric keys?
                     if (ctype_digit(implode('', array_keys($data)))) {
-                        /**
+                        /*
                          * Create nodes to append to $parentNode based on the $key of this array
                          * Produces <xml><item>0</item><item>1</item></xml>
                          * From array("item" => array(0,1));.

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

@@ -25,72 +25,52 @@ use Symfony\Component\Validator\ConstraintValidator;
 class CardSchemeValidator extends ConstraintValidator
 {
     protected $schemes = array(
-        /**
-         * American Express card numbers start with 34 or 37 and have 15 digits.
-         */
+        // American Express card numbers start with 34 or 37 and have 15 digits.
         'AMEX' => array(
             '/^3[47][0-9]{13}$/',
         ),
-        /**
-         * China UnionPay cards start with 62 and have between 16 and 19 digits.
-         * Please note that these cards do not follow Luhn Algorithm as a checksum.
-         */
+        // China UnionPay cards start with 62 and have between 16 and 19 digits.
+        // Please note that these cards do not follow Luhn Algorithm as a checksum.
         'CHINA_UNIONPAY' => array(
             '/^62[0-9]{14,17}$/',
         ),
-        /**
-         * Diners Club card numbers begin with 300 through 305, 36 or 38. All have 14 digits.
-         * There are Diners Club cards that begin with 5 and have 16 digits.
-         * These are a joint venture between Diners Club and MasterCard, and should be processed like a MasterCard.
-         */
+        // Diners Club card numbers begin with 300 through 305, 36 or 38. All have 14 digits.
+        // There are Diners Club cards that begin with 5 and have 16 digits.
+        // These are a joint venture between Diners Club and MasterCard, and should be processed like a MasterCard.
         'DINERS' => array(
             '/^3(?:0[0-5]|[68][0-9])[0-9]{11}$/',
         ),
-        /**
-         * Discover card numbers begin with 6011, 622126 through 622925, 644 through 649 or 65.
-         * All have 16 digits.
-         */
+        // Discover card numbers begin with 6011, 622126 through 622925, 644 through 649 or 65.
+        // All have 16 digits.
         'DISCOVER' => array(
             '/^6011[0-9]{12}$/',
             '/^64[4-9][0-9]{13}$/',
             '/^65[0-9]{14}$/',
             '/^622(12[6-9]|1[3-9][0-9]|[2-8][0-9][0-9]|91[0-9]|92[0-5])[0-9]{10}$/',
         ),
-        /**
-         * InstaPayment cards begin with 637 through 639 and have 16 digits.
-         */
+        // InstaPayment cards begin with 637 through 639 and have 16 digits.
         'INSTAPAYMENT' => array(
             '/^63[7-9][0-9]{13}$/',
         ),
-        /**
-         * JCB cards beginning with 2131 or 1800 have 15 digits.
-         * JCB cards beginning with 35 have 16 digits.
-         */
+        // JCB cards beginning with 2131 or 1800 have 15 digits.
+        // JCB cards beginning with 35 have 16 digits.
         'JCB' => array(
             '/^(?:2131|1800|35[0-9]{3})[0-9]{11}$/',
         ),
-        /**
-         * Laser cards begin with either 6304, 6706, 6709 or 6771 and have between 16 and 19 digits.
-         */
+        // Laser cards begin with either 6304, 6706, 6709 or 6771 and have between 16 and 19 digits.
         'LASER' => array(
             '/^(6304|670[69]|6771)[0-9]{12,15}$/',
         ),
-        /**
-         * Maestro cards begin with either 5018, 5020, 5038, 5893, 6304, 6759, 6761, 6762, 6763 or 0604
-         * They have between 12 and 19 digits.
-         */
+        // Maestro cards begin with either 5018, 5020, 5038, 5893, 6304, 6759, 6761, 6762, 6763 or 0604
+        // They have between 12 and 19 digits.
         'MAESTRO' => array(
             '/^(5018|5020|5038|6304|6759|6761|676[23]|0604)[0-9]{8,15}$/',
         ),
-        /**
-         * All MasterCard numbers start with the numbers 51 through 55. All have 16 digits.
-         */
+        // All MasterCard numbers start with the numbers 51 through 55. All have 16 digits.
         'MASTERCARD' => array(
             '/^5[1-5][0-9]{14}$/',
         ),
-        /**
-         * All Visa card numbers start with a 4. New cards have 16 digits. Old cards have 13.
-         */
+        // All Visa card numbers start with a 4. New cards have 16 digits. Old cards have 13.
         'VISA' => array(
             '/^4([0-9]{12}|[0-9]{15})$/',
         ),