license update: LGPL-2.1 and GPL-2.0
README states license is LGPL-2.1 (only) and LICENSE confirms. There is a significant number of GPL-2.0 files in test and examples
license update: LGPL-2.1 and GPL-2.0
README states license is LGPL-2.1 (only) and LICENSE confirms. There is a significant number of GPL-2.0 files in test and examples