test files.

test files.

requires them.  Disable executable bits and shebang lines in test and
benchmark files in order to prevent using a random system python, and in
source files of modules which don't provide command line interface.  Fixed
shebang lines in the unittestgui and checkpip scripts.

requires them.  Disable executable bits and shebang lines in test and
benchmark files in order to prevent using a random system python, and in
source files of modules which don't provide command line interface.  Fixed
shebang line to use python3 executable in the unittestgui script.

system python.

Add __name__ and __doc__ to __slots__

__slot__ => __slots__

* Negative integer support in binary plists was broken

* Better exception for invalid data

* Fix the versionadded/versionchanged markup in the documentation

* Add the interface cleanup to what's new for 3.4

and return converter from existing functions.

When dict got clinicized in 8fde1a2c94dc for Issue #16612 an erroneous
trailing quote was left in the clinic docstring summary line.

illegal attribute name.  Found by INADA Naoki.