lf data combine rawdemods & depreciate cmds

new:
data rawdemod
replaces:
data askmandemod
data askrawdemod
data fskrawdemod
data nrzrawdemod
data psk1rawdemod
data psk2rawdemod

also commented out of the CommandTable but did not remove the commands:
data askdemod
data bitstream
data fskdemod
data mandemod
data threshold