Fix bootstrapping by removing uses of the copy module in distutils
diff --git a/Lib/distutils/dist.py b/Lib/distutils/dist.py
index 2d57ad0..5fe262b 100644
--- a/Lib/distutils/dist.py
+++ b/Lib/distutils/dist.py
@@ -8,7 +8,6 @@
 
 import sys, os, string, re
 from types import *
-from copy import copy
 
 try:
     import warnings
@@ -537,7 +536,7 @@
         # merge it in with the global negative aliases.
         negative_opt = self.negative_opt
         if hasattr(cmd_class, 'negative_opt'):
-            negative_opt = copy(negative_opt)
+            negative_opt = negative_opt.copy()
             negative_opt.update(cmd_class.negative_opt)
 
         # Check for help_options in command class.  They have a different