Re-added fn_update_functions
Re-added fn_update_functions

To allow users to delete legacy functions

Maxximou5/linuxgameservers,Maxximou5/linuxgameservers,GameServerManagers/LinuxGSM,Sodierlow/linuxgsm,zunnu/linuxgsm,zunnu/linuxgsm,dgibbs64/linuxgsm,GameServerManagers/LinuxGSM,Sodierlow/linuxgsm,dgibbs64/linuxgsm