Fix for bug 489710 . byteswap optimize for MSVC++. Contributed by Makoto Kato. r=julien
Fix for bug 489710 . byteswap optimize for MSVC++. Contributed by Makoto Kato. r=julien

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