Translate library/threading.po

[SivanYeh]

翻譯threading

• [ ] threading — Thread-based parallelism
• [ ] Thread-Local Data
• [ ] Thread Objects
• [x] Lock Objects
• [x] RLock Objects
• [ ] Condition Objects
• [ ] Semaphore Objects
• [ ] Event Objects
• [ ] Timer Objects
• [ ] Barrier Objects
• [ ] Using locks, conditions, and semaphores in the with statement

[mattwang44]

I'll manage Lock & RLock shortly.