Issue #20101: Merge with 3.3

diff --cc Lib/test/test_time.py
index bc5f69e03127731dcee2fdcae1becba6885f7723,ae3113a04afb236bc5e74eedb023c73119820ad5..c307bc19baaf9dbb4d2989beaa26c0ba1c273ad3
--- 1/Lib/test/test_time.py
--- 2/Lib/test/test_time.py
+++ b/Lib/test/test_time.py
@@@ -384,9 -376,9 +384,10 @@@ class TimeTestCase(unittest.TestCase)
          t2 = time.monotonic()
          dt = t2 - t1
          self.assertGreater(t2, t1)
-         self.assertTrue(0.5 <= dt <= 1.0, dt)
+         # Issue #20101: On some Windows machines, dt may be slightly low
+         self.assertTrue(0.45 <= dt <= 1.0, dt)
  
 +        # monotonic() is a monotonic but non adjustable clock
          info = time.get_clock_info('monotonic')
          self.assertTrue(info.monotonic)
          self.assertFalse(info.adjustable)