Support SHA256, SHA384, and SHA512 hashes in NSS.
Support SHA256, SHA384, and SHA512 hashes in NSS.

nmav/nss,ekr/nss-old,ekr/nss-old,nmav/nss,ekr/nss-old,nmav/nss,nmav/nss,ekr/nss-old,nmav/nss,ekr/nss-old,nmav/nss,nmav/nss,ekr/nss-old,ekr/nss-old