Merge branch '3.4' into 4.2

* 3.4:
  Fix Twig 1.x compatibility
  [Translator] Improve farsi(persian) translations for Form
  Improve fa translations
  Added tests to cover the possibility of having scalars as services.
  fixed tests on old PHP versions
  [FrameworkBundle] Inform the user when save_path will be ignored
  fixed CS
  [Translator] Load plurals from po files properly
  [EventDispatcher] Add tag kernel.rest on 'debug.event_dispatcher' service
  [Console] Update to inherit and add licence
  [Intl] Remove --dev from intl compile autoloader
  [Intl] Init compile tmp volume
  PHP 5 compat
  Add test case
  Update Request.php
  Don't assume port 0 for X-Forwarded-Port
  Load plurals from mo files properly

Author: nicolas-grekas

Resources/bin/autoload.php

@@ -12,7 +12,7 @@
 $autoload = __DIR__.'/../../vendor/autoload.php';
 
 if (!file_exists($autoload)) {
-    bailout('You should run "composer install --dev" in the component before running this script.');
+    bailout('You should run "composer install" in the component before running this script.');
 }
 
 require_once $autoload;

Resources/bin/compile

@@ -1,8 +1,7 @@
 #!/usr/bin/env bash
 
-if [[ $1 == force ]]; then
-    docker pull jakzal/php-intl
-fi;
+[[ $1 == force ]] && docker pull jakzal/php-intl
+[[ ! -d /tmp/symfony/icu ]] && mkdir -p /tmp/symfony/icu
 
 docker run \
     -it --rm --name symfony-intl \