Two remained Transforms Core unit-tests which have failed during ctest are fixed.
test_trfArgClasses : failed due to the fact that
__cmp__() is not supported by Py3. The Py3 version includes set of comparison methods e.g
test_trfArgClassesATLAS : 1)
test_argTAGFileMetadata threw an error. However, we don't need to keep this test in master branch anymore since TAG files are abandoned in master. 2) Updating path of old input test files.