ntttcp-for-linux-v1.4.0

• Report TCP RTT on sender side;
• Report system interrupts for given devices;
• Report number of network packets transmitted;
• Enhanced the "multi-clients" test mode.

ntttcp-for-linux-v1.3.4

Get rid of the additional throughput management thread

1) Additional thread brings extra overhead to system;
2) Current main thread can run the throughput management.