aks:added apped_arg(s); improved README.
aks: reenable the test against recursion
aks:updated several utility descriptions
aks: do not export the xxx_UTILS_SH var -- it keeps subshells from sourcing
aks: minor fixes on args_or_input
aks: changed how arguments are managed; required changes in tests
aks: added args_or_input management; lots of help text fixes