drbd_strings: Renamed the functions to the drbd_ namespace; export them from drbd.ko to drbd_trace.ko
 drbd_bitmap: set bits: do not trigger assert for aligned very last bit.
Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>