config: use config_lookup_int64 to avoid ABI breakage with libconfig8
config: use config_lookup_int64 to avoid ABI breakage with libconfig8

grevutiu-gabriel/freshplayerplugin,reuben/freshplayerplugin,reuben/freshplayerplugin,grevutiu-gabriel/freshplayerplugin,Papapashu/freshplayerplugin,reuben/freshplayerplugin,Papapashu/freshplayerplugin,Papapashu/freshplayerplugin