These files were announced as the 'sneak preview' of the diagram of the mysql 5.1. information schema. This is the first upgrade of the diagram corresponding to MySQL 5.0. The files are now obsolete, and they are listed here solely for reference and completeness. The latest version is available here: http://www.xcdsql.org/MySQL/information_schema/5.1/MySQL_5_1_INFORMATION_SCHEMA.html
