Fix asyncio issue 235 (merge from 3.4).

diff --cc Lib/asyncio/queues.py
Simple merge

diff --cc Misc/NEWS
index 24fb78e2fb177758435913ae3476bd16feebea67,a6a3d822dbdd8bb6d2f60241d4abe2279c53c384..e9af7169f15af389d3eaad9966a80e6a8bc574db
--- 1/Misc/NEWS
--- 2/Misc/NEWS
+++ b/Misc/NEWS
@@@ -49,6 -29,10 +49,10 @@@ Core and Builtin
  Library
  -------
  
 -  increment unfinished tasks (this bug was introduced in 3.4.3 when
+ - Fix asyncio issue 235: LifoQueue and PriorityQueue's put didn't
++  increment unfinished tasks (this bug was introduced when
+   JoinableQueue was merged with Queue).
+ 
  - Issue #23908: os functions now reject paths with embedded null character
    on Windows instead of silently truncate them.