Integrate @encukou's suggestion to use lazy imports in ctypes

Author: jonathandung

Lib/ctypes/util.py

@@ -1,8 +1,9 @@
 import os
-import shutil
-import subprocess
 import sys
 
+lazy import shutil
+lazy import subprocess
+
 # find_library(name) returns the pathname of a library, or None.
 if os.name == "nt":