Remove 'import *' statement from dist/command/build_doc.py

There are various 'import *' statements scattered through the code which
are generally not a good thing. These should be fairly safe changes, but
I'll commit them one file at a time to make it easier to track down
issues with a bisect if they crop up later.

Author: jerrykan

roundup/dist/command/build_doc.py

@@ -5,9 +5,7 @@
 #
 
 import os, sys
-from stat import *
 import os.path
-from shutil import *
 import glob
 
 from distutils.command import build