more robust: only type inference with its finish/fixate phase (on contrast to dc387e3999ec), e.g. avoid accidental "improvement" of type class operations (free vs. const);
src/Pure
src/FOL
src/HOL
src/ZF
src/CCL
src/CTT
src/Cube
src/FOLP
src/LCF
src/Sequents
src/Doc
src/Tools