PEP 302 + zipimport:

- new import hooks in import.c, exposed in the sys module
- new module called 'zipimport'
- various changes to allow bootstrapping from zip files

I hope I didn't break the Windows build (or anything else for that
matter), but then again, it's been sitting on sf long enough...

Regarding the latest discussions on python-dev: zipimport sets
pkg.__path__ as specified in PEP 273, and likewise, sys.path item such as
/path/to/Archive.zip/subdir/ are supported again.

Python/pythonrun.c

@@ -161,6 +161,8 @@ Py_Initialize(void)
 	/* phase 2 of builtins */
 	_PyImport_FixupExtension("__builtin__", "__builtin__");
 
+	_PyImportHooks_Init();
+
 	initsigs(); /* Signal handling stuff, including initintr() */
 
 	initmain(); /* Module __main__ */