[time-nuts] tg2 working on Linux with portaudio and usb audio dongles

[Christopher Hoover]

I did a thing:

https://github.com/charlieh0tel/irig

which is to make tg2.c compile by itself on Linux and work with portaudio.

It works well for me at 48 KHz sample rate, which is available on most
codecs (unlike 8 KHz), including typical USB audio dongles.

Tested on Ubuntu 21.10 x86_64 and Raspbian 11 vs  my Kode TTE 374-642 IRIG
time display.

I have not verified that the top of second is where it is supposed to be.

-- Christopher.
73 DE AI6KG