wconsd

Implement send break function (closes #23)

Implement the ability to kill existing connections
This is a new command to force quit any current serial connection

Uncook CRLF sequences into plan CR in net_to_com
My testing had been done with the linux telnet client and it sent CR NUL
as the end-of-line character sequence. Both putty and windows telnet
are sending CR LF as end-of-line sequence. This change pretty much...

Update version number

Add telnet processing to serial-data-pump. Add ability to exit back to menu.
There is still a lot of cleanup work remaining from here. We do not need the
menu thread, we should run the menu from the net_to_com thread, however it
appears to meet the requirements. closes #16, #20

Migrate threads to new connection model, allowing multiple connections.
This is the first part of migrating the two threads to use the new
connection table. This change also rips out a lot of the event waiting
system. All the unused variables are going, but I have not yet looked...

Minor build fixups

Update copywright and version

Convert run_menu to not busy wait
It took me a while to notice, but the run_menu is written using
blocking file metaphor, but the socket it is working on is a non
blocking socket. This manifests itself with the run_menu loop
consuming most of the available CPU time

Add telnet option processing, including ECHO support
The amount of effort here seems like overkill, but it seems
to be the practical minimum implementation for telnet clients
to do the right thing. I have added in more decoding than is
strictly required and I hacked in the status suboption so that...