(Contributed by Gerrit Holl.  Reviewed by Jeff Epler.)

The shutils.rmtree() implementation uses an excessive amount of memory when
deleting large directory hierarchies. Before actually deleting any files, it
builds up a list of (function, filename) tuples for all the files that it is
going to remove.

[ 1030629 ] PyOS_InputHook broken

with a couple of utterly inconsequential changes by me.

(Contributed by Nick Coghlan.)

accept any iterable instead of only a sliceable object.

Closes bug #1039270.

the example so it does pass.

Closes bug #1038935.  Thanks Malte Helmert for spotting it.

SF bug #997050: Document, test, & check for non-string values in ConfigParser.  Moved the new string-only restriction added in rev. 1.65 to the SafeConfigParser class, leaving existing ConfigParser & RawConfigParser behavior alone, and documented the conditions under which non-string values work.

SF bug #1017864: ConfigParser now correctly handles default keys, processing them with ``ConfigParser.optionxform`` when supplied, consistent with the handling of config file entries and runtime-set options.

Briefly (from the NEWS file):

- Updates for the email package:
  + All deprecated APIs that in email 2.x issued warnings have been removed:
    _encoder argument to the MIMEText constructor, Message.add_payload(),
    Utils.dump_address_pair(), Utils.decode(), Utils.encode()
  + New deprecations: Generator.__call__(), Message.get_type(),
    Message.get_main_type(), Message.get_subtype(), the 'strict' argument to
    the Parser constructor.  These will be removed in email 3.1.
  + Support for Python earlier than 2.3 has been removed (see PEP 291).
  + All defect classes have been renamed to end in 'Defect'.
  + Some FeedParser fixes; also a MultipartInvariantViolationDefect will be
    added to messages that claim to be multipart but really aren't.
  + Updates to documentation.