Err when invalid UTF-8 should have been generated in LSO mode.

LSO strings are byte arrays, but our strings are made for Mono which uses Unicode, and invalid UTF-8 sequences can't be stored in Unicode without using a custom representation.

One possible representation is to only use the codepoints 0-255 in the Unicode string, to avoid supporting multiple types for strings. Something to study in future.

lslopt/lslcommon.py

@@ -30,6 +30,9 @@ class Quaternion(tuple):
     def __repr__(self):
         return 'Quaternion(' + super(Quaternion, self).__repr__() + ')'
 
+class ELSONotSupported(Exception):
+    pass
+
 # Recognized: 3763, 6466, 6495
 Bugs = set([6495])