(Merge 3.4) Issue #21723: asyncio.Queue: support any type of number (ex: float)

for the maximum size. Patch written by Vajrasky Kok.

diff --cc Misc/NEWS
index 38527f9a1e033fa57d89fe0c648f1a15d4834d99,6e333a4944762423537aa8c768f4839a635f895b..b2a5760e322af483bdec730c439489784e0a4702
--- 1/Misc/NEWS
--- 2/Misc/NEWS
+++ b/Misc/NEWS
@@@ -103,16 -27,9 +103,19 @@@ Core and Builtin
  Library
  -------
  
+ - Issue #21723: asyncio.Queue: support any type of number (ex: float) for the
+   maximum size. Patch written by Vajrasky Kok.
+ 
 +- Issue #21711: support for "site-python" directories has now been removed
 +  from the site module (it was deprecated in 3.4).
 +
 +- Issue #17552: new socket.sendfile() method allowing to send a file over a
 +  socket by using high-performance os.sendfile() on UNIX.
 +  Patch by Giampaolo Rodola'.
 +
 +- Issue #18039: dbm.dump.open() now always creates a new database when the
 +  flag has the value 'n'.  Patch by Claudiu Popa.
 +
  - Issue #21326: Add a new is_closed() method to asyncio.BaseEventLoop.
    run_forever() and run_until_complete() methods of asyncio.BaseEventLoop now
    raise an exception if the event loop was closed.