Document that ctypes automatically applies byref() when argtypes declares
POINTER.

response message when  send_error includes a message in addition to error
status. Patch contributed by Karl.

This removes the dependency on bisect and it bring the pure Python code
in-sync with the C code.

framework builds.

Issue #17278: Fix a crash in heapq.heappush() and heapq.heappop() when the list is being resized concurrently.

Fix issue16932: Fix the urlparse example. Remote :port when scheme is not specified to demonstrate correct behavior

Add test for fragment producing with XMLGenerator.

This fixes an apparent copy-and-paste error.

Original patch by Manuel Jacob.

Patch by Lowe Thiderman

#15438: add a note to math.pow() that suggests using **/pow() for integers.  Patch by Mark Dickinson.