Patch by Steve Dougherty.

That option had been for Win2k compatibility (which was dropped with
Python 3.3) and makes default ttk ugly on post-Win2k systems.

- Nix the 'noxp' option, it was for Win2k compatibility (which was dropped
  with Python 3.3) and made default ttk ugly on post-Win2k systems (#21665)
- Use 'OPTS=symbols' instead of 'DEBUG=1'; symbols is the official method
- Use core, shell, dlls, install-binaries, and install-libraries targets
  instead of all and install to avoid trying to 1) build packages that don't
  work with MSVC 10+ and 2) install unnecessary bits and pieces.

Add BaseEventLoop._closed attribute and use it to check if the event loop was
closed or not, instead of checking different attributes in each subclass of
BaseEventLoop.

run_forever() and run_until_complete() now raises a RuntimeError('Event loop is
closed') exception if the event loop was closed.

BaseProactorEventLoop.close() now also cancels "accept futures".

Before, regrtest failed to remove the temporary test directory because the
process was still running in this directory.

Before, regrtest failed to remove the temporary test directory because the
process was still running in this directory.

Windows. Patch written by Claudiu Popa.

Patch written by Claudiu Popa.