Fixed setup.py use of setuptools vs distutils, so .c and .h files are included...

Fixed setup.py use of setuptools vs distutils, so .c and .h files are included in the bdist_egg. Merged from r90444 in the 3.8 branch.

HISTORY.txt

@@ -4,6 +4,9 @@ What's new in ZODB 3.8.0
 General
 -------
 
+- (unreleased) Fixed setup.py use of setuptools vs distutils, so .c and .h
+  files are included in the bdist_egg.
+
 - The ZODB Storage APIs have been documented and cleaned up.
 
 - ZODB versions are now officially deprecated and support for them

setup.py

@@ -59,11 +59,11 @@ scripts = []
 import glob
 import os
 import sys
-from distutils.extension import Extension
+from setuptools.extension import Extension
 from distutils import dir_util
-from distutils.dist import Distribution
-from distutils.command.install_lib import install_lib
-from distutils.command.build_py import build_py
+from setuptools.dist import Distribution
+from setuptools.command.install_lib import install_lib
+from setuptools.command.build_py import build_py
 from distutils.util import convert_path
 
 if sys.version_info < (2, 4, 2):