ObjFW  Check-in [1b3d035041]

struct objc_sparsearray_level3 {
	const void *buckets[256];
	BOOL empty;
};

enum objc_abi_class_info {
	OBJC_CLASS_INFO_CLASS	    = 0x01,
	OBJC_CLASS_INFO_METACLASS   = 0x02,
	OBJC_CLASS_INFO_SETUP	    = 0x04,
	OBJC_CLASS_INFO_LOADED	    = 0x08,
	OBJC_CLASS_INFO_INITIALIZED = 0x10
	OBJC_CLASS_INFO_CLASS	    = 0x001,
	OBJC_CLASS_INFO_METACLASS   = 0x002,
	OBJC_CLASS_INFO_SETUP	    = 0x100,
	OBJC_CLASS_INFO_LOADED	    = 0x200,
	OBJC_CLASS_INFO_INITIALIZED = 0x400
};

typedef struct {
	of_mutex_t mutex;
	of_thread_t owner;
	int count;
} objc_mutex_t;