* Combined effort of W1HKJ, KK5VD and KL4YFD
* Corrected 8psk1333 symbol rate to 12
* Added no-fec and fec for each 8psk modem type
* Assigned RsID codes to new modem types
- backward compatible with previous 8psk implementation
* Reset interleaver at the start of PSK TX.
* Add init() routines to encoder:: and viterbi:: in order to reset
internals without reallocation.
* Remove string length variance 'n' when measuring char timing.
* 8PSK soft decoder
- 8PSK soft bits now use the phase error as a measure of received-bit quality
- phase error is applied in combination with the a-priori mapped softbits
- hard-coded the gray-unmapping of incoming bits (reduced CPU load slightly)
* AFC using vestigial carrier for all 8psk modes
- enable using "PSK pilot" on psk config tab
- level controllable on psk config tab
- use increases cpu usage
- use can improve low s/n decoding
* Updated 8psk mode and configuration documention
David Freese