BUG #13780: Multiple commands not allowed for creating a policy.

The following bug has been logged on the website:

Bug reference:      13780
Logged by:          Caleb Meredith
Email address:      calebmeredith8@gmail.com
PostgreSQL version: 9.5beta1
Operating system:   OSX
Description:

When performing a grant I can do:

    GRANT INSERT, UPDATE, DELETE ON TABLE person TO user;

But when creating a policy I can't do:

    CREATE POLICY user_write ON person FOR INSERT, UPDATE, DELETE TO user
      USING (…);

The specific error is:

    ERROR:  syntax error at or near ","
    LINE 1: ...TE POLICY user_write ON person FOR INSERT, UPDATE, ...

This doesn't seem to be intended as the GRANT specification allows it, and
CREATE POLICY supports the ALL command.