Rename importlib.util.ModuleManager to module_to_load so that the name
explains better what the context manager is providing.
diff --git a/Lib/importlib/util.py b/Lib/importlib/util.py
index f817a40..74eef2a 100644
--- a/Lib/importlib/util.py
+++ b/Lib/importlib/util.py
@@ -1,6 +1,6 @@
"""Utility code for constructing importers, etc."""
-from ._bootstrap import ModuleManager
+from ._bootstrap import module_to_load
from ._bootstrap import module_for_loader
from ._bootstrap import set_loader
from ._bootstrap import set_package