Checkpoint. Manipulated things so that string literals are always

unicode, and a few other compensating changes, e.g. str <- unicode,
chr <- unichr, and repr() of a unicode string no longer starts
with 'u'.  Lots of unit tests are broken, but some basic things
work, in particular distutils works so the extensions can be built,
and test_builtin.py works.

Python/import.c

@@ -154,7 +154,7 @@ _PyImport_Init(void)
 		}
 	}
 
-	if (Py_UnicodeFlag) {
+	{
 		/* Fix the pyc_magic so that byte compiled code created
 		   using the all-Unicode method doesn't interfere with
 		   code created in normal operation mode. */