Issue #21951: Temporary skip crashing test_user_command on AIX.
Issue #21951: Temporary skip crashing test_user_command on AIX.
Issue #22018: Fix test_signal: use assertEqual() not assertIs()
Issue #21580: Now Tkinter correctly handles bytes arguments passed to Tk.
In particular this allows to initialize images from binary data.
Issue #21580: Now Tkinter correctly handles bytes arguments passed to Tk.
In particular this allows to initialize images from binary data.
Issue #22085: Dropped support of Tk 8.3 in Tkinter.
Issue #22068: Don't create self reference cycles in idlelib.ConfigDialog.
Merge with 3.4
Back out of changes to Tkinter variables trace commands (issue #22085).
timemodule.c: Replace PyExc_IOError with PyExc_OSError
Issue #22111: Assorted cleanups in test_imaplib.  Patch by Milan Oberkirch.
Simplify code in multiprocessing.Connection.send_bytes().
Followup to issue #20540; patch by Serhiy.
Issue #21907: Further improvments to build_pgo.bat.  Patch by Ingolf Becker.
Issue #21907: Avoid using double quotes to check argument values.

Double quotes in expanded variables can match literal double quotes,
which makes for a big mess when passing in a quoted argument (like
"/p:externalsDir=..\externals", for example).