configure: add that windows has RUSGE_THREAD

Signed-off-by: Jens Axboe <axboe@kernel.dk>
Correct ifdef checks for posix and linux fallocate

Signed-off-by: Jens Axboe <axboe@kernel.dk>
hash: make 64-bit type ULL

Signed-off-by: Jens Axboe <axboe@kernel.dk>
NAN: use __builtin_nanf() if not available

Signed-off-by: Jens Axboe <axboe@kernel.dk>
configure: fix more old FIO_HAVE_ checks

Signed-off-by: Jens Axboe <axboe@kernel.dk>
options: add help to experimental_verify

Option help is required...

Signed-off-by: Jens Axboe <axboe@kernel.dk>
configure: solaris and windowsaio fixups

Signed-off-by: Jens Axboe <axboe@kernel.dk>
configure: kill windows FIO_HAVE_FDATASYNC

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