Allow multi url for subdirs
Around line 155 of main/inc/global.inc.php in 1.9, there is a new switch that allows you to define multiple urls based on subdirs. However, it doesn't manage cookies very well (those depend on the rel dir defined in main/inc/conf/configuration.php).
It shouldn't require too much effort to make additional changes to global.inc.php to manage that subdir in the cookie when detecting that we are using it.
No particular schedule for this. It's a "nice to have but no hurry".