boostorg/build — pull request #32 by frenchtoast747 (2014-09-03 18:52:39+00:00)
Title: Python Port: Make importing a little more robust.

- create a b2. index for O(1) package/module searching.
- make the .pyc's sit next to their respective files; preventing
pollution of workspace
- restore the __file__ variable for imported files
- prevent importing the same module twice under two separate names;
also preventing running initialization code twice (registering types
and features)
- create an __init__.py for the contrib directory
- requires Python 2.3 or newer for pkgutil