Further style changes to curve448 code

#define C448_WNAF_FIXED_TABLE_BITS 5

#define C448_WNAF_VAR_TABLE_BITS 3

static const int EDWARDS_D = -39081;

#define EDWARDS_D       (-39081)

static const curve448_scalar_t precomputed_scalarmul_adjustment = {

    {

        {

# define HEADER_WORD_H

# include <string.h>

# include <assert.h>

# include <stdlib.h>

# include <openssl/e_os2.h>

# include "arch_intrinsics.h"

# include "curve448utils.h"

# include <stdlib.h>

# if defined(__ARM_NEON__)

#  include <arm_neon.h>

# if C448_WORD_BITS == 64

#  define SC_LIMB(x) (x)

# elif C448_WORD_BITS == 32

#  define SC_LIMB(x) ((uint32_t)x),(x >> 32)

#  define SC_LIMB(x) ((uint32_t)(x)),((x) >> 32)

# else

#  error "For now we only support 32- and 64-bit architectures."

# endif