stack-checker.known-words: add effects for signal-handler and leaf-signal-handler primitives, even though they can't be called directly
stack-checker.known-words: add effects for signal-handler and leaf-signal-handler primitives, even though they can't be called directly

mcandre/factor,mcandre/factor,erg/factor,erg/factor,mcandre/factor,erg/factor,erg/factor,erg/factor,mcandre/factor,erg/factor,erg/factor,mcandre/factor,mcandre/factor,mcandre/factor