static inline 和 nsinline

提高编译器兼容性

#if !defined(NS_INLINE)

#if defined(__GNUC__)

#define NS_INLINE static __inline__ __attribute__((always_inline))

#elif defined(__MWERKS__) || defined(__cplusplus)

#define NS_INLINE static inline

#elif defined(_MSC_VER)

#define NS_INLINE static __inline

#elif TARGET_OS_WIN32

#define NS_INLINE static __inline__

#endif

#endif