added AmariIndex ica eval function
fixed up AmariIndex and added ica eval unit tests
changed AmariIndex calc to use more variables for clarity
Make CDenseFeatures::get_num_features() const
Make CLabels and subclasses get_label_type and get_num_labels methods const
changed SG_ERROR to REQUIRE in AmariIndex
Merge pull request #1373 from pickle27/develop

added AmariIndex ica eval function
avoid double memory usage in CSVFile
Merge pull request #1390 from gsomix/feature/csvfile

Avoid double memory usage in CSVFile
add string access methods to CSVFile
Merge pull request #1391 from gsomix/feature/csvfile

Add string access methods to CSVFile
Merge pull request #1389 from iglesias/develop

Make a few getters const.
mute deprecated warning on cygwin