Merged in mumak/distribute (pull request #14)

--HG--
branch : distribute
extra : rebase_source : d8c7ca9f7aec8b82aa94b5e0a940da46964792db

setuptools/archive_util.py

@@ -158,6 +158,9 @@ def unpack_zipfile(filename, extract_dir, progress_filter=default_filter):
                 finally:
                     f.close()
                     del data
+            unix_attributes = info.external_attr >> 16
+            if unix_attributes:
+                os.chmod(target, unix_attributes)
     finally:
         z.close()