add dummy before doing ref / unref magic
add param version to load/save serializable
another attempt to fix unknown load/save_serializable
change order of includes to fix compile error
don't include SGStringList in SGObject.h
include SGRefObject before SGObject for swig
drop SERIALIZABLE_DUMMY
add namespace to get Externalizable to work for real
make ref/unref known *before* including the class
Added StructuredModel::structured_labels_factory() to create the right SO labels class.
Prepared StructuredLabels' methods for overloading.
Overloading add_label, set_label, get_label, get_num_elements in MulticlassSOLabels.
Added own storage object for real labels.
Temporarily disabled ensure_valid calls.
Fixed memory leak (forgot freeing of new CRealNumber labels).
Fix wrong indentation in LabelsFactory::get_name
Merge pull request #1775 from iglesias/develop

Fix wrong indentation in LabelsFactory::get_name
when mldata.org cannot be accessed w/o error - don't let the example fail
Minor style and doc fixes in StringFeatures
Merge pull request #1776 from iglesias/develop

Minor style and doc fixes in StringFeatures
Update Java requirements
Merge pull request #1778 from iglesias/develop

Update Java requirements