- perhaps add timing limits to send_cmds.c

- implement or remove -o option

- implement setsockopt() instead of requiring user-controlled tuning.

- perhaps implement average times, either in the program itself or in a
  separate script.

- perhaps allow hostnames in addition to ip addresses... if this is done, the
  hostname should be resolved every connect, to allow round-robin dns entries
  to act as intended.  (... or perhaps that should be configurable as well)

