remove warning on support for 2.4 (depreciated) and annonce multiple file option
remove warning on support for 2.4 (depreciated) and annonce multiple file option

dneiter/exabgp,dneiter/exabgp,earies/exabgp,fugitifduck/exabgp,fugitifduck/exabgp,blablacar/exabgp,earies/exabgp,fugitifduck/exabgp,lochiiconnectivity/exabgp,PowerDNS/exabgp,lochiiconnectivity/exabgp,PowerDNS/exabgp,earies/exabgp,benagricola/exabgp,chrisy/exabgp,dneiter/exabgp,chrisy/exabgp,benagricola/exabgp,blablacar/exabgp,PowerDNS/exabgp,benagricola/exabgp,blablacar/exabgp,chrisy/exabgp,lochiiconnectivity/exabgp