Update jansson library to versin 2.7
Update jansson library to versin 2.7

TheNotary/FayeCpp,OlehKulykov/FayeCpp,OlehKulykov/FayeCpp,OlehKulykov/FayeCpp,OlehKulykov/FayeCpp,OlehKulykov/FayeCpp,TheNotary/FayeCpp,OlehKulykov/FayeCpp,TheNotary/FayeCpp,TheNotary/FayeCpp,TheNotary/FayeCpp