added int type constraints to accomodate hacked SML/NJ;

made mk_int/dest_int pervasive;

Experimental removal of assumptions of the form x : UNIV and the like after interpretation.

Repaired term_of_char.

- Added cycle test to function mk_ind_def to avoid non-termination of code generator. - Functions generated from inductive predicates having neither parameters nor input arguments now take a unit element as an argument, otherwise the generated code would be ill-formed.

tuned;

converted Meson tests to proper theory;