Remove additional copy in pkt trace
#2290: In PostProcessingQuery::merge_processing(), if the merged_result is not empty, then the merged_result need to be sorted after the result of that chunk is copied to the merged_result
Update PktTrace to make num_buffers configurable from Introspect
Remove lock from PktTrace
Minor fixes for ObjectId and MessageType stat recording
gcc4.8.1 build break
gcc4.8.1 build break