Issue #15853: merge 3.2 -> 3.3

diff --cc Lib/idlelib/NEWS.txt
index 292c5a0bc9ddb99ac72ec095acdf3fa41136a202,f234b64b853b7995389f84c919d290083c981edf..f6e8917d20f5f3ae14b858adb5a8b3333f301d15
--- 1/Lib/idlelib/NEWS.txt
--- 2/Lib/idlelib/NEWS.txt
+++ b/Lib/idlelib/NEWS.txt
@@@ -1,11 -1,4 +1,14 @@@
 -What's New in IDLE 3.2.4?
 +What's New in IDLE 3.3.1?
 +=========================
 +
 +- Issue #16226: Fix IDLE Path Browser crash.
 +  (Patch by Roger Serwy)
 +
++- Issue #15853: Prevent IDLE crash on OS X when opening Preferences menu
++  with certain versions of Tk 8.5.  Initial patch by Kevin Walzer.
++
 +
 +What's New in IDLE 3.3.0?
  =========================
  
  - Issue #7163: Propagate return value of sys.stdout.write.