Added "tests/pthread_qrencode".
Added "tests/pthread_qrencode".

UniQP/libqrencode,fuhangbo/libqrencode,alexrao/libqrencode,jaybinhe/libqrencode,mazoRen/libqrencode,sballe73/libqrencode,mazoRen/libqrencode,fuhangbo/libqrencode,fukuchi/libqrencode,alexrao/libqrencode,sballe73/libqrencode,jaybinhe/libqrencode,tklauser/libqrencode,alexrao/libqrencode,jaybinhe/libqrencode,alexrao/libqrencode,UniQP/libqrencode,tklauser/libqrencode,fuhangbo/libqrencode,mazoRen/libqrencode,fukuchi/libqrencode,jaybinhe/libqrencode,UniQP/libqrencode,tklauser/libqrencode,UniQP/libqrencode,mazoRen/libqrencode,fukuchi/libqrencode,sballe73/libqrencode,tklauser/libqrencode,sballe73/libqrencode