This example sets up a Discover client program which simply prints
out all incoming IPC frames from Discover.  It can be useful for 
debugging Discover IPC scripts.

Procedure:

% make
% discovery echoipc

Review echoipc.txt which is the output of the echoipc client
program.

Review echoipc.inp and note the correspondence between what the
Discover script sends and the output from the echoipc program.
