change spin lock to try lock in rt-thread.
change spin lock to try lock in rt-thread.

OpenMusicKontrollers/sherlock.lv2,OpenMusicKontrollers/sherlock.lv2,OpenMusicKontrollers/synthpod,OpenMusicKontrollers/synthpod,OpenMusicKontrollers/eteroj.lv2,OpenMusicKontrollers/sherlock.lv2,OpenMusicKontrollers/chimaera.lv2,OpenMusicKontrollers/synthpod,OpenMusicKontrollers/synthpod,OpenMusicKontrollers/orbit.lv2,OpenMusicKontrollers/sherlock.lv2,OpenMusicKontrollers/synthpod,OpenMusicKontrollers/espressivo.lv2,OpenMusicKontrollers/eteroj.lv2,OpenMusicKontrollers/orbit.lv2,OpenMusicKontrollers/chimaera.lv2