Add the way of restoring original java code by tokens stream.

[Pilipets]

I believe that will be useful to add the option in tokenizer to restore the original indentation and java code with a given stream of tokens.

I can commit to this functionality if you don't mind.

[Pilipets]

Original code might contain tabs and spaces so one needs to change the way the column index is calculated by treating '\t', ' ' and other spaces as different column biases.