FT-636: Changes to tokuftdump to show messages and garbage at height and node level on the FT

ft/ft.cc

@@ -1062,6 +1062,11 @@ garbage_helper(BLOCKNUM blocknum, int64_t UU(size), int64_t UU(address), void *e
             goto exit;
         }
     }
+    {
+        float a = info->used_space, b=info->total_space;
+        float percentage = (1 - (a / b)) * 100;
+        printf("LeafNode# %d has %d BasementNodes and %2.1f%% of the allocated space is garbage\n", (int)blocknum.b, node->n_children, percentage);
+    }
 exit:
     toku_ftnode_free(&node);
     toku_free(ndd);