Returns the plugin for the given name.  By default, the
        base Builder instance will be returned.
        
        :param      name | <str>

def plugin(name, module=''):
        """
        Returns the plugin for the given name.  By default, the
        base Builder instance will be returned.
        
        :param      name | <str>
        """
        if module:
            mod = projex.importfile(module)
            if mod:
                return getattr(mod, nstr(name), None)

        return Builder._plugins.get(nstr(name))