Bug 125728 truncate utf8 correctly in the pkcs11 string.
Bug 125728 truncate utf8 correctly in the pkcs11 string.

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