add NO_NN_EXPORTS

Signed-off-by: Martin Sustrik <sustrik@250bpm.com>
NO_NN_EXPORTS renamed to NN_NO_EXPORTS

Signed-off-by: Martin Sustrik <sustrik@250bpm.com>
Aleksandar Fabijanic added to AUTHORS file

Signed-off-by: Martin Sustrik <sustrik@250bpm.com>