Patch by Tshepang Lekhonkhobe.

(Consolidating this check and various checks in tkinter files and moving them
to test.support and test.regrtest will be another issue.)

Issue #18513: Add workaround for OS X 10.8 cexp bug that leads to wrong cmath.rect(0.0,-0.0) results.

(maxlen and weakref) to the end.

The current pattern of memory access will update both the leftlink and
rightlink at the same time, so they should be positioned side-by-side
for better cache locality.

Keeping the leftlink at the front of the structure would make sense
only if the paired updates were eliminated by backporting changesets
49a9c734304d, 3555cc0ca35b, ae9ee46bd471, and 744dd749e25b.  However,
that isn't likely to happen, so we're better off with the leftlink at
the end of the structure.

Phil Webster. With that available, modify RstripExtension.py to stop deleting
null slices, which caused a file to be marked as changed when it was not.

Based on patches by Todd.Rovito and Phil Webster.

Initial patch by Madison May.

do with byte strings.

Added tests for Tcl.split() and tcl.splitline().

This fixes two places where 'int'  was used to represent
the size of strings, instead of 'Py_ssize_t'.

(The issue is not present in the corresponding code in the 3.x branches)

Fixes #18427

This changeset fixes a number of compiler warnings in the Python Launcher
binary for OSX. It also cleans up whitespace usage in those sources.

Issue #12990: The "Python Launcher" on OSX could not launch python scripts that have paths that include wide characters.