Merge branch '3.4' into 4.0

* 3.4:
  fix merge
  [Security] Fix logout
  Cleanup 2 tests for the HttpException classes
  #27250 limiting GET_LOCK key up to 64 char due to changes in MySQL 5.7.5 and later
  [Config] Fix tests when path contains UTF chars
  [DI] Shared services should not be inlined in non-shared ones
  [Profiler] Remove propel & event_listener_loading category identifiers
  [Filesystem] Fix usages of error_get_last()
  [Cache][Lock] Fix usages of error_get_last()
  [Debug] Fix populating error_get_last() for handled silent errors
  [DI] Display previous error messages when throwing unused bindings
  Suppress warnings when open_basedir is non-empty

Author: nicolas-grekas

Store/FlockStore.php

@@ -78,8 +78,7 @@ private function lock(Key $key, $blocking)
         );
 
         // Silence error reporting
-        set_error_handler(function () {
-        });
+        set_error_handler(function ($type, $msg) use (&$error) { $error = $msg; });
         if (!$handle = fopen($fileName, 'r')) {
             if ($handle = fopen($fileName, 'x')) {
                 chmod($fileName, 0444);
@@ -91,8 +90,7 @@ private function lock(Key $key, $blocking)
         restore_error_handler();
 
         if (!$handle) {
-            $error = error_get_last();
-            throw new LockStorageException($error['message'], 0, null);
+            throw new LockStorageException($error, 0, null);
         }
 
         // On Windows, even if PHP doc says the contrary, LOCK_NB works, see