Remove mp_init/mp_clear calls (and potential mallocs,frees and zeros) in tight loops for bug #326482
Remove mp_init/mp_clear calls (and potential mallocs,frees and zeros)
in tight loops for bug #326482

r=nelson

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