Persian accidentals

[Kees van den Doel]

Is there any way to print the koron (60cents flat) and sori (40 cent sharp)?
I've defined these pitch alterations by modifying makam.ly but they should 
really
be printed according to the Persian notation.

koron = upside down flat, with a triangular body like |>
sori = like sharp but with the two horizontal lines angled to form a '>' sign.

Any suggestions appreciated, I'm prepared to do some hacking if required.

Kees