These 3 tcl files contain a simple server-client program using the
TclDP (Tcl Distributed Processing) library.

To run it, make sure the permissions are set to executable for hello-serv.tcl
and hello-client.tcl.

Run hello-serv.tcl on 1 machine, say potato.cs.  hello-client.tcl needs to
know which host the server is running on, so you need to edit the line

	set hostname quimby

to match whatever machine the server is running on.  Then just run
hello-client.tcl and observe the output on both machines.

Please read the comments in hello-client.tcl and hello-world.tcl.

Note that you don't really need to understand the dp-lib.tcl file to use the
library.  The relevant commands are:

# create a server and return a handle to the server
dp_makeRPCServer
# create a client and return a handle to the client
dp_makeRPCClient
# send an RPC to the server and wait for the return value
dp_RPC
# send an RPC to the server but don't wait for the return value
dp_RDO

