multipliers, not final sizes.  Explain y default for .zoom and .subsample.
Initial patch by Serhiy Storchaka.

* add link to PYTHONMALLOCSTATS env var
* add parameters to PyMem macros like PyMem_MALLOC()
* fix PyMem_SetupDebugHooks(): add Calloc functions
* add some newlines for readability

Patch by Tamás Bence Gedai.

Added few missed tests for configure options.

Force clean externals on buildbots.

Force clean of externals on buildbots.

The bufsize parameter is now deprecated and ignored.

The bufsize parameter is no longer used.

On Windows a symlink can has the FILE_ATTRIBUTE_DIRECTORY flag.

On Windows a symlink can has the FILE_ATTRIBUTE_DIRECTORY flag.

On Windows a symlink can has the FILE_ATTRIBUTE_DIRECTORY flag.

gcc as the option does not work correctly in older versions of gcc
and has been silently removed as of gcc-4.5.

Patch by Alex Willmer.

Since Python 3.4, there is no need to install pip and setuptools
into a venv manually.

Since Python 3.4, there is no need to install pip and setuptools
into a venv manually.

Added an optional argument timespec to the datetime isoformat() method
to choose the precision of the time component.

Original patch by Alessandro Cucci.

Patch by Guo Ci Teo.

Patch by Guo Ci Teo.