fix listing topics

weed/mq/topic/topic_partition.go

@@ -0,0 +1,14 @@
+package topic
+
+import "fmt"
+
+type TopicPartition struct {
+	Namespace  string
+	Topic      string
+	RangeStart int32
+	RangeStop  int32
+}
+
+func (tp *TopicPartition) String() string {
+	return fmt.Sprintf("%v.%v-%04d-%04d", tp.Namespace, tp.Topic, tp.RangeStart, tp.RangeStop)
+}