Added register_special_page() function, to make it much easier to create special pages. Also, rewrote Special:Memberlist to use more efficient fetch method and not use an unbuffered whole-table query.
# Used for testing mod_rewrite.
<IfModule mod_rewrite.c>
RewriteEngine on
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule (.*) install.php?do=modrewrite_test&str=$1
</IfModule>