BUG#4393, BUG#4356 - incorrect decimals in fix_length_and_dec() in some functions

mysql-test/mysql-test-run.sh

@@ -589,6 +589,8 @@ show_failed_diff ()
     echo "Please follow the instructions outlined at"
     echo "http://www.mysql.com/doc/en/Reporting_mysqltest_bugs.html"
     echo "to find the reason to this problem and how to report this."
+    echo ""
+    echo "Test $1 failed!"
   fi
 }