PFC - Provide File Comments
Accordig to Sun Code Conventions for Java,
all source files should begin with a c-style comment
that lists the class name, version information, date, and copyright notice:
/*
 * Classname
 * Version information
 * Date
 * Copyright notice
 */
This audit rule verifies whether the file begins with a c-style comment. It may optionally verify whether this comment contains the name of the top-level class given file contains.