soundmodem PTT with hamlib

[remi.ch...@gmail.com]

Hi,

A new feature has been added to the soundcard packet radio modem
'soundmodem' which allows to set/reset the PTT with hamlib, instead of
the serial or parallel connection.

When compiling hamlib, the 'configure' script automatically checks
whether hamlib is installed in the target machine.

The hamlib parameters can then be configured using the utility
'soundmodemconfig', and these parameters are savec in the conf files
this program generates. This patch is completely compatible with
existing configuration files.

It can be downloaded at http://www.baycom.org/~tom/ham/soundmodem/
in the tar file: soundmodem-0.14.tar.gz