Round to int, because some systems support sub-second time stamps in stat, but not in utime.

Also be consistent with modifying only mtime, not atime.

Lib/test/test_os.py

@@ -226,9 +226,11 @@ class StatAttributeTests(unittest.TestCase):
     def test_utime_dir(self):
         delta = 1000000
         st = os.stat(test_support.TESTFN)
-        os.utime(test_support.TESTFN, (st.st_atime, st.st_mtime-delta))
+        # round to int, because some systems may support sub-second
+        # time stamps in stat, but not in utime.
+        os.utime(test_support.TESTFN, (st.st_atime, int(st.st_mtime-delta)))
         st2 = os.stat(test_support.TESTFN)
-        self.assertAlmostEquals(st2.st_mtime, st.st_mtime-delta, 2)
+        self.assertEquals(st2.st_mtime, int(st.st_mtime-delta))
 
     # Restrict test to Win32, since there is no guarantee other
     # systems support centiseconds