ENHANCED: Indentation of line following { to simply align with the
previous line + 2.
Repeat '^ * ' in /* ... */ comment-mode
ADDED: make fill-paragraph work for comments styled as

    /**
     *
     */
Make auto-fill mode to work in /* ... */ comments.
Implement ->indent_comment_line for the line after /**
ADDED: close_block_comment, turning "^ * " into " */"
Allow for /** comment indentation if /* is not at the left margin.