SF 658405: calendar.py to rely on the datetime module instead of the time
module.
The code is shorter, more readable, faster, and dramatically increases the
range of acceptable dates.
Also, used the floor division operator in leapdays().
diff --git a/Misc/NEWS b/Misc/NEWS
index 5cc62bf..a9e3803 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -443,6 +443,10 @@
Library
-------
+- calendar.py now depends on the new datetime module rather than
+ the time module. As a result, the range of allowable dates
+ has been increased.
+
- pdb has a new 'j(ump)' command to select the next line to be
executed.