which were deprecated since Zope 2.4

(Fix for collector #1770 that never made it.)

  adding a getPhysicalPath() on a request just smells bad,
  and it's not that hard to roll your own root object.

- Fixed thinko with mutable default arg, duh.

- Improved docstrings.

it now wraps Testing.makerequest.makerequest().

when used on anything other than an app object.
Also added an 'environ' argument if you want to use something
other than os.environ, and added a couple trivial tweaks from 
ZopeTestCase.makereqeust.
Added unit tests for this stuff.

- Added placeless.py for Z3-style setup. Thanks to Whit Morriss.

generate a deprecation warning when convenience function in StructuredText
is called (the whole STructuredText package is deprecated).

version 1.3.3.

      - Applied patch by Yoshinori Okuji to fix some XML export/import
        problems