- QNX: avoid conflicting db defines for __mutex_lock/__mutex_unlock.
- QNX: avoid conflicting db defines for __mutex_lock/__mutex_unlock.

devzero2000/RPM5,devzero2000/RPM5,devzero2000/RPM5,devzero2000/RPM5,devzero2000/RPM5,devzero2000/RPM5,devzero2000/RPM5