'u' format of the array module uses again Py_UNICODE type for backward
compatibility with Python 3.2.

The only change from Python 3.2 is that PyUnicode_AsUnicode() result is now
checked for NULL value.

Issue #14814: Remove redundant property from interface objects - prefixlen can be accessed via the associated network object

Issue 14814: Docs work showed some more cases of networks pretending to be addresses and highlighted the weird approach to implementing the 'is_whatever' properties. Impl now illustrates far more clearly that networks have a property if both their network and broadcast addresses have that property

Close #15559: Implementing __index__ creates a nasty interaction with the bytes constructor. At least for 3.3, ipaddress objects must now be explicitly converted with int() and thus can't be passed directly to the hex() builtin.

Patch by Roger Serwy.

Patch by Roger Serwy.

os.sched_setaffinity now use regular sets of integers to represent the
CPUs a process is restricted to.

asynchat speedup improvement: avoid to use a function mimicking old buffer() builtin behavior; instead use plain slicing

sys.stdout and sys.stderr are now using "\r\n" newline on Windows, as Python 2.

sys.stdout and sys.stderr are now using "\r\n" newline on Windows, as Python 2.

doesn't translate newlines on output.