+29Oct02=======================================================================
+1. make sh/log et al a bit more efficient.
+2. fix dupe message in dx.
+3. update cty.dat to the latest, add k8T, K8O to KH8 and TX5BTY to FO/A
+4. clear cache on reload of prefixes
25Oct02=======================================================================
1. remove the dupefile automatically if it becomes corrupted
2. instrument the startup slightly more