Initial commit of LDAP plugin

vendor/symfony/polyfill-php56/README.md

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+Symfony Polyfill / Php56
+========================
+
+This component provides functions unavailable in releases prior to PHP 5.6:
+
+- [`hash_equals`](http://php.net/hash_equals)  (part of [hash](http://php.net/hash) extension)
+- [`ldap_escape`](http://php.net/ldap_escape) (part of [ldap](http://php.net/ldap) extension)
+
+More information can be found in the
+[main Polyfill README](https://github.com/symfony/polyfill/blob/master/README.md).
+
+License
+=======
+
+This library is released under the [MIT license](LICENSE).