Latino: updated package, debugged, new widgets: "Extract Documents", "Multiple Splits Validation", "Random Cross Validation Sets", "Random Sequential Validation Sets", "Get Multi Set Indexes".

Latino: New latest version of Latino.dll based on git version 728fb13 (consequently some other dlls modified)

auto_imort_packages has a new option ('-a', '--ask') to enable it to interactively ask to import packages which are marked not to be imported.

added check for illegal built-in predicates in the prolog scripts. run the scripts in a separate time-limited thread, but it still needs to run in jail mode (TODO).