I would like to take a working, stable, MediaWiki directory under /var/www, copy its contents to a new directory, and perform whatever steps are necessary to place the new directory into "just installed" state.
Media Wiki 1.15.0 Apache/2.2.3 (Red Hat) Server at localhost Port 80 PHP 5.1.6 (cli) (built: Nov 13 2010 16:08:24) Red Hat Enterprise Linux Client release 5.7 (Tikanga) Your MySQL connection id is 487 Server version: 5.0.77 Source distribution
I am familiar enough with MySQL and the config files to change whatever is needed to reset everything. I cannot find any instructions like this at all out on the web.