Merge fix for building against Fink's Python from bcully.

setup.py

@@ -53,7 +53,7 @@ if sys.platform == 'darwin' and os.path.exists('/usr/bin/xcodebuild'):
     # Also parse only first digit, because 3.2.1 can't be parsed nicely
     if (version.startswith('Xcode') and
         int(version.split()[1].split('.')[0]) >= 4):
-        os.environ['ARCHFLAGS'] = '-arch i386 -arch x86_64'
+        os.environ['ARCHFLAGS'] = ''
 
 setup(name='dulwich',
       description='Python Git Library',