Fix broken import

--HG--
branch : setuptools
extra : convert_revision : svn%3A6015fed2-1504-0410-9fe1-9d1591cc4771/sandbox/trunk/setuptools%4042039

setuptools/command/build_ext.py

@@ -11,6 +11,7 @@ from setuptools.extension import Library
 from distutils.ccompiler import new_compiler
 from distutils.sysconfig import customize_compiler
 from distutils import log
+from distutils.errors import *
 
 have_rtld = False
 libtype = 'shared'