make Functional.__call__ interface consistent. Remove double registration of final timelevel. Add note on the adjointer time clobbering problem
make Functional.__call__ interface consistent. Remove double registration of final timelevel. Add note on the adjointer time clobbering problem

live-clones/libadjoint,live-clones/libadjoint,live-clones/libadjoint,live-clones/libadjoint