incorrect if statement fixed

[bastianbin]

fixed potential error with incorrect if statement. the tokenizer is now used for every line parsing process.

The original statement

if (options.Delimiter.Equals(options.Separator))
    dataValues = Tokenize(sLine, options.Delimiter); //use custom tokenizer for improved performance
else
    dataValues = sLine.Split(options.Delimiter); //use ordinary Split function for simple cases

was always false since otherwise it would've been impossible to corretcly read the csv file. now it always uses the Tokenizer and throws an ArgumentException if delimiter and separator are equal.

[bastianbin]

Fixed another condition that was supposed to skip comments.