tcl serial port support

[Mikhail Teterin]

=bad option "-mode": should be one of -blocking, -buffering,
=	-buffersize, -encoding, -eofchar, or -translation while executing

Strange. I run a recent current with Tcl8.4.6 -- the `-mode' option is
here and the test program from the gpsman page works fine.

Looking at TCL sources, the option is #ifdef-ed. Can you rebuild Tcl and
Tk from their respective ports _on your_ machine and try again?

	-mi