BUG: maximum train and validation sizes were not correctly handled
(ac574321)

BUG: fix TrainImagesClassifier when bm=0.
(2a3cce86)

- Change prodnodatalabel -> nodatalabel
- Rename private class member with naming convention.
- Change writeContingencyTable to WriteContingencyTable.
- Change initialization m_RasterizeReference.

ENH: Since GetContingencyTable() is not a simple getter (it computes new things), change name to less ambiguous BuildContingencyTable()

Now input vector with class is required for unsupervised classifier.
The cases where input vector data were optional for unsupervised
classification are commented.

Update license for added/moved files.

This allow to have only one application to handle bot supervised and
unsupervised classifier.