Merge branch '3.4' into 4.4

* 3.4:
  Update console.rst
  [lock] Be more specific about flock releasing locks

Author: javiereguiluz

components/lock.rst

@@ -244,7 +244,8 @@ FlockStore
 
 The FlockStore uses the file system on the local computer to create the locks.
 It does not support expiration, but the lock is automatically released when the
-PHP process is terminated::
+lock object goes out of scope and is freed by the garbage collector (for example
+when the PHP process ends)::
 
     use Symfony\Component\Lock\Store\FlockStore;
 

console.rst

@@ -391,7 +391,7 @@ Whenever an exception is thrown while running commands, Symfony adds a log
 message for it including the entire failing command. In addition, Symfony
 registers an :doc:`event subscriber </event_dispatcher>` to listen to the
 :ref:`ConsoleEvents::TERMINATE event <console-events-terminate>` and adds a log
-message whenever a command doesn't finish with the ``0`` exit status.
+message whenever a command doesn't finish with the ``0`` `exit status`_.
 
 Learn More
 ----------
@@ -409,5 +409,7 @@ tools capable of helping you with different tasks:
 * :doc:`/components/console/helpers/formatterhelper`: customize the output colorization
 * :doc:`/components/console/helpers/progressbar`: shows a progress bar
 * :doc:`/components/console/helpers/table`: displays tabular data as a table
+* :doc:`/components/console/helpers/debug_formatter`: provides functions to
+  output debug information when running an external program
 
 .. _`exit status`: https://en.wikipedia.org/wiki/Exit_status