Add proprietary NEC code for Traceback
This is documented in 9.1.2 https://sxauroratsubasa.sakura.ne.jp/documents/sdk/pdfs/g2af01e-C++UsersGuide-033.pdf
Thanks to Jens-Olaf Beismann (NEC).
This is documented in 9.1.2 https://sxauroratsubasa.sakura.ne.jp/documents/sdk/pdfs/g2af01e-C++UsersGuide-033.pdf
Thanks to Jens-Olaf Beismann (NEC).