Merge branch '4.3' into 4.4

* 4.3:
  Fix tests
  [Console] Fix commands description with numeric namespaces
  [HttpFoundation] Fixed typo
  [EventDispatcher] Better error reporting when arguments to dispatch() are swapped
  [Serializer] CsvEncoder::NO_HEADERS_KEY ignored when used in constructor
  [Form] Keep preferred_choices order for choice groups
  [Debug] work around failing chdir() on Darwin
  [PhpUnitBridge] Read configuration CLI directive
  [DI] Missing test on YamlFileLoader
  Revert "minor #34608 [Process] add tests for php executable finder if file does not exist (ahmedash95)"
  Simpler example for Apache basic auth workaround
  [Console] Fix trying to access array offset on value of type int
  [Config] Remove extra sprintf arg
  [VarDumper] notice on potential undefined index
  [HttpClient] turn exception into log when the request has no content-type
  [Process] add tests for php executable finder if file does not exist
  [Cache] Make sure we get the correct number of values from redis::mget()
  [TwigBridge] Add row_attr to all form themes
  [Serializer] Fix MetadataAwareNameConverter usage with string group

BinaryFileResponse.php

@@ -343,7 +343,7 @@ public static function trustXSendfileTypeHeader()
     }
 
     /**
-     * If this is set to true, the file will be unlinked after the request is send
+     * If this is set to true, the file will be unlinked after the request is sent
      * Note: If the X-Sendfile header is used, the deleteFileAfterSend setting will not be used.
      *
      * @param bool $shouldDelete

ServerBag.php

@@ -43,13 +43,13 @@ public function getHeaders()
             /*
              * php-cgi under Apache does not pass HTTP Basic user/pass to PHP by default
              * For this workaround to work, add these lines to your .htaccess file:
-             * RewriteCond %{HTTP:Authorization} ^(.+)$
-             * RewriteRule .* - [E=HTTP_AUTHORIZATION:%{HTTP:Authorization}]
+             * RewriteCond %{HTTP:Authorization} .+
+             * RewriteRule ^ - [E=HTTP_AUTHORIZATION:%0]
              *
              * A sample .htaccess file:
              * RewriteEngine On
-             * RewriteCond %{HTTP:Authorization} ^(.+)$
-             * RewriteRule .* - [E=HTTP_AUTHORIZATION:%{HTTP:Authorization}]
+             * RewriteCond %{HTTP:Authorization} .+
+             * RewriteRule ^ - [E=HTTP_AUTHORIZATION:%0]
              * RewriteCond %{REQUEST_FILENAME} !-f
              * RewriteRule ^(.*)$ app.php [QSA,L]
              */