Merge libubox with the version 2016.02.26 from its git.

3P/libubox/utils.h

@@ -58,10 +58,11 @@ extern int __BUILD_BUG_ON_CONDITION_FAILED;
 
 #ifdef __APPLE__
 
-#define CLOCK_REALTIME	0
-#define CLOCK_MONOTONIC	1
+#include <mach/clock_types.h>
+#define CLOCK_REALTIME	CALENDAR_CLOCK
+#define CLOCK_MONOTONIC	SYSTEM_CLOCK
 
-void clock_gettime(int type, struct timespec *tv);
+int clock_gettime(int type, struct timespec *tv);
 
 #endif
 
@@ -159,6 +160,10 @@ static inline uint16_t __u_bswap16(uint16_t val)
 #define __constructor __attribute__((constructor))
 #endif
 
+#ifndef __destructor
+#define __destructor __attribute__((destructor))
+#endif
+
 #ifndef __hidden
 #define __hidden __attribute__((visibility("hidden")))
 #endif
@@ -179,4 +184,12 @@ static inline bool bitfield_test(unsigned long *bits, int bit)
 	return !!(bits[bit / BITS_PER_LONG] & (1UL << (bit % BITS_PER_LONG)));
 }
 
+int b64_encode(const void *src, size_t src_len,
+	       void *dest, size_t dest_len);
+
+int b64_decode(const void *src, void *dest, size_t dest_len);
+
+#define B64_ENCODE_LEN(_len)	((((_len) + 2) / 3) * 4 + 1)
+#define B64_DECODE_LEN(_len)	(((_len) / 4) * 3 + 1)
+
 #endif