Basic module loader.
This provides the same functionality as built-in import. It
doesn't deal with checking sys.modules -- all it provides is
find_module() and a load_module(), as well as find_module_in_dir()
which searches just one directory, and can be overridden by a
derived class to change the module search algorithm when the basic
dependency on sys.path is unchanged.
The interface is a little more convenient than imp's:
find_module(name, [path]) returns None or 'stuff', and
load_module(name, stuff) loads the module.
Definition at line 95 of file ihooks.py.