Frama-C API - Logic_binding
 val add_binding : t -> Frama_c_kernel.Cil_types.logic_var -> Frama_c_kernel.Cil_types.varinfo -> tval get : t -> Frama_c_kernel.Cil_types.logic_var -> Frama_c_kernel.Cil_types.varinfoval remove : t -> Frama_c_kernel.Cil_types.logic_var -> unit