merge with 3.4

diff --cc Misc/NEWS
index 46c35edbe80f88f005d33747a32b9cb340ab28ac,b3ae42f93476d2b22abbac92e8855c570625a6ab..c3634cbaee63aa6e43ba47abc4fab14d1e5934f6
--- 1/Misc/NEWS
--- 2/Misc/NEWS
+++ b/Misc/NEWS
@@@ -129,13 -32,21 +129,29 @@@ Core and Builtin
  Library
  -------
  
 -  shrunk.  Original patches by Jan Kanis and Lita Cho. 
+ - Issue #22051: turtledemo no longer reloads examples to re-run them.
+   Initialization of variables and gui setup should be done in main(),
+   which is called each time a demo is run, but not on import.
+ 
+ - Issue #21933: Turtledemo users can change the code font size with a menu
+   selection or control(command) '-' or '+' or control-mousewheel.
+   Original patch by Lita Cho.
+ 
+ _ Issue #21597: The separator between the turtledemo text pane and the drawing
+   canvas can now be grabbed and dragged with a mouse.  The code text pane can
+   be widened to easily view or copy the full width of the text.  The canvas
+   can be widened on small screens.  Original patches by Jan Kanis and Lita Cho.
+ 
+ - Issue #18132: Turtledemo buttons no longer disappear when the window is
++  shrunk.  Original patches by Jan Kanis and Lita Cho.
++
 +- Issue #22043: time.monotonic() is now always available.
 +  ``threading.Lock.acquire()``, ``threading.RLock.acquire()`` and socket
 +  operations now use a monotonic clock, instead of the system clock, when a
 +  timeout is used.
 +
 +- Issue #21527: Add a default number of workers to ThreadPoolExecutor equal
 +  to 5 times the number of CPUs.  Patch by Claudiu Popa.
  
  - Issue #22216: smtplib now resets its state more completely after a quit.  The
    most obvious consequence of the previous behavior was a STARTTLS failure