1) NCicLibrary (which is untrusted) moved after NCicUntrusted.

1) NCicLibrary (which is untrusted) moved after NCicUntrusted.
   NCicLibrary registers get_obj to NCicEnvironemnt (and to NCicPp)
2) URIs are now refreshed when objects are included from disk

Observation: even NCicPp is untrusted. Thus its implementation should be put
at the end and some references set to one early module. Which one? Two
choices: NCic or NCicPp (two modules, one with the implementation follows).
Could the same be done for NCicLibrary too in order to bring back the explicit
dependency of NCicEnvironment over NCicLibrary? [ In that case, remember to
change back the exception caught by GrafiteDisambiguate ]