Update py-werkzeug and py-werkzeug-docs to 0.9.2.

Version 0.9.2
-------------

(bugfix release, released on July 18th 2013)

- Added `unsafe` parameter to :func:`~werkzeug.urls.url_quote`.
- Fixed an issue with :func:`~werkzeug.urls.url_quote_plus` not quoting
  `'+'` correctly.
- Ported remaining parts of :class:`~werkzeug.contrib.RedisCache` to
  Python 3.3.
- Ported remaining parts of :class:`~werkzeug.contrib.MemcachedCache` to
  Python 3.3
- Fixed a deprecation warning in the contrib atom module.
- Fixed a regression with setting of content types through the
  headers dictionary instead with the content type parameter.
- Use correct name for stdlib secure string comparision function.
- Fixed a wrong reference in the docstring of
  :func:`~werkzeug.local.release_local`.
- Fixed an `AttributeError` that sometimes occurred when accessing the
  :attr:`werkzeug.wrappers.BaseResponse.is_streamed` attribute.

(kleink)