Fixed the case of the "Ctrl-" prefixes.

This changes the equivalent functions listed for the Base-64, hex and Quoted-
Printable codecs to reflect the functions actually used. Also mention and
test the "quotetabs" setting for Quoted-Printable encoding.

Remove notice that was backported in revision 50527a1b769c.

Patch from Tim Tisdall.

Reported by Nat Dunn on docs@

PyUnicode_AsEncodedString() instead of calling the encode() method of the
host, to handle correctly custom string with an encode() method which doesn't
return a byte string. The encoder of the IDNA codec is now called directly
instead of calling the encode() method of the string.

Patch from Shiyao Ma.

It was very much outdated, and the topic is better covered elsewhere.

boolean result instead of raising an exception.

Patch by A Kaptur.

Patch from Tim Tisdall.

Needs to be tested on a BSD.

Also fix signature because os.utime(..., ns=None) is not allowed.

the path of the directory for temporary files contains symlinks.

Patch by Shaun Walbridge

for directories (including empty directories) in ZIP file.
Added test for comparing shutil.make_archive() with the "zip" command.

expat parser.

Added additional tests for expat parser attributes.
Based on patch by John Leitch.

Windows.  The test now makes sense on non-Windows.  Added similar test for
zip format.

details in issue25018.

there (as when opening Idle from interactive Python on Windows).

Patch from John Beck.

Patch from Matheus Vieira Portela.

in an infinite loop.  Patch by Xavier de Gaye.

Issue #24891: Fix a race condition at Python startup if the file descriptor
of stdin (0), stdout (1) or stderr (2) is closed while Python is creating
sys.stdin, sys.stdout and sys.stderr objects. These attributes are now set
to None if the creation of the object failed, instead of raising an OSError
exception. Initial patch written by Marco Paolini.

The ICC compiler doesn't seem to support defined() in macro expansion. Example
of warning:

warning #3199: "defined" is always false in a macro expansion in Microsoft mode