Closes #22580: Fix documentation of PyUnicode_Tailmatch()

The result type is Py_ssize_t (and not int).

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branch : 3.4
Issue #22568: Fix compilation of posixmodule.c with Open Watcom: rename "utime"
variable to "ut" to avoid conflict with the C utime() function. Patch written
by Jeffrey Armstrong.

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branch : 3.4
Issue #22588: Fix typo in _testcapi.test_incref_decref_API()

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branch : 3.4
#18176: updated stdtypes UCD link, added reminder to makeunicodedata.

Patch by Alexander Belopolsky.

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branch : 3.4
#18176: fix another reference and add it to the makeunicodedata comment.

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branch : 3.4
De-'colour'ize stdlib except for idlelib.configDialog.
Tweak docstrigs and comments in affected functions in idlelib.configHandler.

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branch : 3.4
#18176: Change generic UCD PropList link to version specific link.

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branch : 3.4