[IronPython] Line info in PythonSyntaxError

[Szymon Kobalczyk]

Hi,
I found it quite convenient to be able to catch parsing error from the 
engine's Compile method and read the line and column number where the 
error occurred. In previous version this was simply displayed in the 
PythonSyntaxError's message. Currently it was removed and instead this 
exception carries this information in private fields so it can recreate 
PythonException. Do you have anything against exposing these fields as 
read-only properties?

Regards,
Szymon Kobalczyk