Save and restore %ebx register in all functions.  Fixes bug 64940.
Save and restore %ebx register in all functions.  Fixes bug 64940.

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