get the mutated vars from assign_convert + make the sexp_to_ast register the defining linklets of linklet vars
get the mutated vars from assign_convert + make the sexp_to_ast register the defining linklets of linklet vars

samth/pycket,pycket/pycket,samth/pycket,pycket/pycket,pycket/pycket,samth/pycket