bpo-34956: edit and format better NEWS item in 3.9.0b1 changelog (GH-20255)

(cherry picked from commit bac170cd93)

Co-authored-by: Ned Deily <nad@python.org>
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Miss Islington (bot) 2020-05-20 02:47:07 -07:00 committed by GitHub
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@ -800,12 +800,13 @@ it's not coming from Windows API.
.. nonce: 35IcGF
.. section: macOS
_tkinter now builds and links with non-system Tcl and Tk frameworks if they
are installed in /Library/Frameworks as had been the case on older releases
of macOS. If a macOS SDK is explicitly configured, by using ./configure
--enable-universalsdk= or -isysroot, only a Library/Frameworks directory in
the SDK itself is searched. The default behavior can still be overridden
with configure --with-tcltk-includes and --with-tcltk-libs.
When building Python on macOS from source, ``_tkinter`` now links with
non-system Tcl and Tk frameworks if they are installed in
``/Library/Frameworks``, as had been the case on older releases
of macOS. If a macOS SDK is explicitly configured, by using
``--enable-universalsdk=`` or ``-isysroot``, only the SDK itself is
searched. The default behavior can still be overridden with
``--with-tcltk-includes`` and ``--with-tcltk-libs``.
..