Add endian swap defines for where missing.

miner.h

@@ -143,11 +143,15 @@ static inline int fsync (int fd)
  * htobe64 also won't exist */
 #ifndef htobe32
 # if __BYTE_ORDER == __LITTLE_ENDIAN
+#  define htole16(x) (x)
+#  define htole32(x) (x)
 #  define be32toh(x) bswap_32(x)
 #  define be64toh(x) bswap_64(x)
 #  define htobe32(x) bswap_32(x)
 #  define htobe64(x) bswap_64(x)
 # elif __BYTE_ORDER == __BIG_ENDIAN
+#  define htole16(x) bswap_16(x)
+#  define htole32(x) bswap_32(x)
 #  define be32toh(x) (x)
 #  define be64toh(x) (x)
 #  define htobe32(x) (x)