Bug: .htaccess file created in the wrong folder

When configuring Super Cache, a .htaccess file is created in /wp-content/cache/ that, among other things, sets the Cache-Control header to 'max-age=3, must-revalidate'.

This file is placed in the wrong location, because all super-cache files are actually stored in /wp-content/cache/supercache/. Other plugins use the /wp-content/cache/ folder, and it’s not right that supercache should change the max-age of those files.