iv_wait_test: Use select() without fd sets instead of nanosleep().
iv_wait_test: Use select() without fd sets instead of nanosleep().

As SCO OpenServer Release 6 and SCO UnixWare 7.1.4 don't have
nanosleep().

Signed-off-by: Lennert Buytenhek <8858498612e3a522354216649776e3032dcb7e5b@wantstofly.org>

buytenh/ivykis,buytenh/ivykis