setup.py: remove our_ prefix for distutils commands

setup.py

@@ -19,8 +19,8 @@ import configparser
 from setuptools import setup, Extension, Command
 from sysconfig import get_platform
 from distutils.errors import DistutilsError, DistutilsModuleError
-from setuptools.command.build_ext import build_ext
-from setuptools.command.sdist import sdist
+from setuptools.command.build_ext import build_ext as build_ext_orig
+from setuptools.command.sdist import sdist as sdist_orig
 
 try:
     from os.path import samefile
@@ -218,18 +218,18 @@ def long_description():
     return ''.join(text)
 
 
-class our_build_ext(build_ext):
+class build_ext(build_ext_orig):
     def run(self):
         with open(os.path.join('src', 'version.hh'), 'w') as f:
             f.write("// This file has been generated by setup.py.\n")
             f.write("// It is not included in source distributions.\n")
             f.write('#define VERSION "{}"\n'.format(version))
-        build_ext.run(self)
+        build_ext_orig.run(self)
 
 
-class our_sdist(sdist):
+class sdist(sdist_orig):
     def make_release_tree(self, base_dir, files):
-        sdist.make_release_tree(self, base_dir, files)
+        sdist_orig.make_release_tree(self, base_dir, files)
 
         fname = os.path.join(base_dir, SAVED_VERSION_FILE)
         # This could be a hard link, so try to delete it first.  Is there any way
@@ -280,8 +280,8 @@ def main():
           license="Simplified BSD license",
           platforms=["Unix", "Linux", "Mac OS-X", "Windows"],
           classifiers=classifiers.split('\n'),
-          cmdclass={'build_ext': our_build_ext,
-                    'sdist': our_sdist},
+          cmdclass={'build_ext': build_ext,
+                    'sdist': sdist},
           ext_modules=[Extension(name, **kwargs)
                        for name, kwargs in exts.items()],
           setup_requires=['pytest-runner'],