v0.4-alpha

• Reentrancy set to shared clone on cross-validation, training and prediction to facilitate parallel processing.
• Tool for computing confusion matrix for binary classification results
• Tool for importing a spreadsheet file to svm_problem format (similar to http://www.csie.ntu.edu.tw/~cjlin/libsvm/faq.html#f307)
• Added a simpler example for training a C_SVC classifier (without library logging).
• Minor interface change on linear scaling VIs