Extension:PublicRevision

This is obsolete, the WikiMedia foundation are using Extension:FlaggedRevs which does what was intended by this extension and much more.

Allow articles to be held at a particular revision until subsequent edits are authorised by a user with sufficient permissions.

Installation
To install this extension, copy .php and save into your extensions directory or in a subdirectory thereof. The file then needs to be included in your LocalSettings.php file as usual.