Perform a detailed version check. A very good thing ;).
The function parses the comment headers in all files for their version information,
and outputs that for some javascript to check with simplemachines.org.
It does not connect directly with simplemachines.org, but rather expects the client to.
It requires the admin_forum permission.
Uses the view_versions admin area.
Accessed through ?action=admin;area=maintain;sa=routine;activity=version.
uses Admin template, view_versions sub-template.