error reading values like "5.07856133975082E-4" from files about jahmm HOT 1 OPEN

this is really a plague, especially if you're trying to train 'real' models 
where transitions probabilities are potentially very low (in which case, just 
hacking the Opdf write methods to add more decimals doesn't make any sense...)

Pick the attached class, place it in the 'io' directory and replace all 
references to StreamTokenizer for CustomStreamTokenizer.  This attached class 
is a simple modification of the original Sun StreamTokenizer implementation: it 
now supports the scientific notation for the 'number' class.