mako-render script incompatible with Python 3

**Migrated issue, originally created by Anonymous**

CHANGES in Mako 0.8.0 says that 2to3 is no longer needed, however mako-render does not work without 2to3.


    $ python3 scripts/mako-render
      File "scripts/mako-render", line 43
        print render(data, filename, kw)
                   ^
    SyntaxError: invalid syntax

