Attached is the changeset for the extended serial port support and  
SUnit.

Unix users should be able to build a plugin and run with it. Note that  
I've not coded up a
method on the unix side that builds the list of serial path names.  
Right now it
has /dev/modem as the only hard coded device. That needs a bit of work  
from some
unix aware folks.

Mac users can email me for the plugins for os-x and os-9 support.

Window users need someone to build a plugin.

>>>> Over the last week or so I've been working on an enhanced serial
>>>> port class that allows one to
>>>> alter serial port attributes on the fly, access rs232c pin
>>>> information, plus invoke all sorts of extended
>>>> commands, abuse the unix termios and ioctl interface, and the
>>>> macintosh device control call


======================================================================== 
===
John M. McIntosh <johnmci at smalltalkconsulting.com> 1-800-477-2659
Corporate Smalltalk Consulting Ltd.  http://www.smalltalkconsulting.com
======================================================================== 
===
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