fipssyms.h: assign alias to newly introduced bn_gather5.

#define _sparcv9_vis1_instrument _fips_sparcv9_vis1_instrument

#define bn_mul_mont_gather5 fips_bn_mul_mont_gather5

#define bn_scatter5 fips_bn_scatter5

#define bn_gather5 fips_bn_gather5

#if defined(_MSC_VER)

# pragma section("fipsro$b",read)