added toy server client for profiling

[TylerADavis]

This PR has the (very rough) executables that I set up to test the performance of the TCP connection. I got the following results locally on my laptop (I'll update with firebox on different machines once I've done that):

TCPNoDelay, 4kB messages, zero processing,  500 MB/s
4kB messages, zero processing, 1500 MB/s
 
4k message + 128 byte ack:
Nodelay: 140 MB/s
141 MB/s
 
Read Read Write, w/ 4 byte initial reads
Nodelay: 132 MB/s
Regular: 131 MB/s

The server must be relaunched after each test. To change the behavior, I simply commented different bits of the code inside of the for/while loops at the bottom of the loop methods and changed the values being sent/received.