Undo change to script evaluation, originally made to support <active> + 'giveFocus'; alternate approach to making 'giveFocus' work in dynamic code generatione

con id = fold (fn nm => fn t :: Type => fn acc => [nm] ~ acc => [nm = t] ++ acc) []

con idT = id [D = int, E = float]

val idV = fn x : $idT => x.E