Fix testing and setting set_options bitmap

Fix testing and setting set_options bitmap

set_options bitmap is an array of uint64_t.  But while testing and
setting a bit in the bitmap, the bit mask is calculated with an
unsigned long value.  For the systems which have 32-bit long type,
upper 32-bit cannot be set correctly.

Fix it by using (uint64_t)1 instead of 1UL to calculate correct bit
mask.

Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Signed-off-by: Jens Axboe <axboe@fb.com>