better handling of bad exceptions

bin/cc-cli

@@ -137,10 +137,10 @@ except BadArgument as e:
 except KeyboardInterrupt:
     exit(1)
 except cliError as e:
-    printer.error(str(e))
+    printer.error("cliError: %s"%str(e))
 except Exception as e:
     if cccli.debug:
-        printer.fatal(str(e), quit=False)
+        printer.fatal("%s: %s"%(type(e), str(e)), quit=False)
         raise
     printer.warn("This is a not expected error, please report it!")
     printer.fatal(str(e))

cccli/cli.py

@@ -149,7 +149,7 @@ class Cli(object):
         except Exception as e:
             if cccli.debug:
                 raise
-            self.printer.error(str(e))
+            self.printer.error("%s: %s"%(type(e), str(e)))
             self.printer.warn("This is a not expected error, please report it!")
 
 class CliHandler(RpcHandler):