Basic cache monitor web script which shows:

 - PHP version
 - cache version
 - cache handler version
 - relevant php.ini settings
 - QC constants
 - if handler supports it (only APC): cache contents and cache entry stats
 - if handler supports it (only APC): cache stats downloads (CSV)
 - how to aggregate per-process statistics using auto_append script

Make sure that only those can access it which shall be allowed to see the
information it provides, for example, use a .htaccess to control access.


