If index.php checks for a file that exists only in Elk it can better recognize if there are leftovers from SMF upgrade
If index.php checks for a file that exists only in Elk it can better recognize if there are leftovers from SMF upgrade

Signed-off-by: emanuele <ac2faa8b943b3fcadaf05ed2541f4eebde440ed7@gmail.com>

elkarte/Elkarte,Spuds/Elkarte,nwsw/Elkarte,emanuele45/Dialogo,emanuele45/Dialogo,interlab/Elkarte,wizardaf/Elkarte,Ant59/Elkarte,interlab/Elkarte,wizardaf/Elkarte,StealthWombat/How-to-fork-an-Elk,nwsw/Elkarte,Spuds/Elkarte,joshuaadickerson/Elkarte2,joshuaadickerson/Elkarte2,joshuaadickerson/Elkarte2,nwsw/Elkarte,joshuaadickerson/Elkarte2,Ant59/Elkarte,StealthWombat/How-to-fork-an-Elk,wizardaf/Elkarte,Spuds/Elkarte,Ant59/Elkarte,StealthWombat/How-to-fork-an-Elk,wizardaf/Elkarte,emanuele45/Dialogo,interlab/Elkarte,StealthWombat/How-to-fork-an-Elk,elkarte/Elkarte,elkarte/Elkarte