Take a list of specifications and make scripts from them,
        :param specifications: A list of specifications.
        :return: A list of all absolute pathnames written to,

def make_multiple(self, specifications, options=None):
        """
        Take a list of specifications and make scripts from them,
        :param specifications: A list of specifications.
        :return: A list of all absolute pathnames written to,
        """
        filenames = []
        for specification in specifications:
            filenames.extend(self.make(specification, options))
        return filenames