Add new function `signame', which returns name (SIGXXX) of numeric
signal, and replace lookups in signalent[] with calls to it.
diff --git a/defs.h b/defs.h
index d9ecccc..4dcef20 100644
--- a/defs.h
+++ b/defs.h
@@ -267,6 +267,7 @@
extern int setbpt P((struct tcb *));
extern int sigishandled P((struct tcb *, int));
extern void printcall P((struct tcb *));
+extern char *signame P((int));
extern void printsignal P((int));
extern void printleader P((struct tcb *));
extern void printtrailer P((struct tcb *));