updates nistkat-sha256 fields: only one entry is hashed, obtained with 'cat PQCkemKAT_.rsp | head -n 10 | tail -n 8 | sha256sum'
Adds own fips202.h for avx2 version with namespace pqcrystals_fips202avx2##s. This is to avoid namespace collisions and portability issues if both versions are included in a library.
.yml definitions:
Adds own fips202.h for avx2 version with namespace pqcrystals_fips202avx2##s. This is to avoid namespace collisions and portability issues if both versions are included in a library.