configure: use exit 0 instead of just exit

Signed-off-by: Jens Axboe <axboe@kernel.dk>
fusion-aw: fixes

Signed-off-by: Jens Axboe <axboe@kernel.dk>
fusion-aw: make configure and compile actually work

Signed-off-by: Jens Axboe <axboe@kernel.dk>