This fixes "Spurious test failures on IRIX?" reported in April. Apparently I was wrong in conclusions about when addition starts overflowing in combaX routines.
This fixes "Spurious test failures on IRIX?" reported in April. Apparently
I was wrong in conclusions about when addition starts overflowing in combaX
routines.

openssl/openssl,openssl/openssl,openssl/openssl,openssl/openssl,openssl/openssl,openssl/openssl