Switch order so that IOP prefers Ligo Timing Card to old TDS system

See merge request !622

An IOP that sees both a LIGO Timing Card and a Contect 16/16, which an indicator of the old TDS system, will now choose the LIGO Timing Card.

Note that there's still no way to run 1PPS with a contec1616 installed,
and now no way to run either 1PPS or TDS with a LIGO timing card installed.

Add atan2 and phaseunwrap math parts.

See merge request !602

Supress awgtpman "too new" message.

See merge request !597

Also delete send wavform debug string, since this is also sent all the time during an arbitrary stream.

The "too new" error is normal behavior.  Some clients, SIStr in particular, prevent buffer underflows by streaming data until they get a "too new" error message.

User model adjusts ADC limit based on card bit depth, only check for overflow...

See merge request !568

User model adjusts ADC limit based on card bit depth, only check for overflow in ADCs the model uses.

Fpu error tracking and reporting.

See merge request !558

Fast IOP loop optimization

See merge request !556