Rename _hooks to _compat

Author: jaraco

importlib_metadata/_hooks.py importlib_metadata/_compat.pyimportlib_metadata/_hooks.py renamed to importlib_metadata/_compat.py

@@ -14,7 +14,7 @@
 
 from importlib import import_module
 from itertools import starmap
-from ._hooks import install, NullFinder
+from ._compat import install, NullFinder
 
 if sys.version_info > (3,):  # pragma: nocover
     from configparser import ConfigParser