setup: backout 8504699d1aa6

Change wasn't compatible with Python 2.x

setup.py

@@ -210,7 +210,7 b' class hgbuild(build):'
                     ('build_ext', build.has_ext_modules),
                    ] + build.sub_commands
 
-class hgbuildmo(Command):
+class hgbuildmo(build):
 
     description = "build translations (.mo files)"
 
@@ -240,12 +240,6 b' class hgbuildmo(Command):'
             self.mkpath(join('mercurial', modir))
             self.make_file([pofile], mobuildfile, spawn, (cmd,))
 
-    def initialize_options(self):
-        pass
-
-    def finalize_options(self):
-        pass
-
 
 class hgdist(Distribution):
     pure = 0