Fix doc markup error.
merge with 3.3
Closes #19622: clarify message about bufsize changes in 3.2.4 and 3.3.1.
merge with 3.3
Cleanup test_tracemalloc.py. Patch written by Vajrasky Kok.
Remove an errant extra \ within a docstring.
Remove an errant extra \ within a docstring.
merge heads
Close #19762: Fix name of _get_traces() and _get_object_traceback() function
name in their docstring. Patch written by Vajrasky Kok.
Mention the new tracemalloc module in the What's New in Python 3.4 document
Issue #19753: New try to fix test_gdb on System Z buildbot