Merge branch '3.2'

* 3.2:
  do not depend on a fixed date in layout tests
  [Console] Escape default value when dumping help
  [Console] OS X Can't call cli_set_process_title php without superuser
  Fixed @return when returning this or static #bis
  fixed @return when returning this or static
  Polish translation improvement in Validator component
  [Console] Descriptors should use Helper::strlen
  [Config] Improve PHPdoc / IDE autocomplete
  [Debug] Wrap call to ->log in a try catch block
  [Debug] UndefinedMethodFatalErrorHandler - Handle anonymous classes
  fix merge
  [cache] Bump RedisAdapter timeout to 5s
  fixed @return when returning this or static
  [SecurityBundle] Made collection of user provider unique when injecting them to the RemberMeService
  remove is_writable check on filesystem cache

composer.json

@@ -22,7 +22,7 @@
     "require-dev": {
         "symfony/asset": "~2.8|~3.0",
         "symfony/finder": "~2.8|~3.0",
-        "symfony/form": "~3.0.4",
+        "symfony/form": "~3.1.9|^3.2.2",
         "symfony/http-kernel": "~3.2",
         "symfony/polyfill-intl-icu": "~1.0",
         "symfony/routing": "~2.8|~3.0",