Declare new vendor-defined mechanisms for SHA256, SHA384 and SHA512.
Declare new vendor-defined mechanisms for SHA256, SHA384 and SHA512.

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