ndctl: release v66

This release incorporates functionality up to the 5.3 kernel, and adds a
number of bug fixes, and improvements.

Highlights include a new command to reconfigure dax devices to
different modes (devdax - default, and system-ram - to hotplug the dax
device as system memory), improvements to ndctl-{read,write,init}-labels
allowing smaller sized reads/writes, usability fixes to ndctl-monitor,
and ndctl-create-namespace, and a fix to ndctl-check-namespace allowing
it to be used on systems with different page sizes.

Commands:
  daxctl-reconfigure-device: new command for device mode management
  daxctl-{on,off}line-memory: new commands for devices in system-ram mode
  monitor: logging improvements, allow sending to background
  inject-error: refuse to operate on activew BTT namespaces
  *-labels: improvements to minimize data transfer
  create-namespace: usability improvements around region search

Tests:
  security.sh: handle backup keys, mark test as 'destructive'
  device-dax: fix bus-model detection
  daxctl-devices: new test for daxctl-reconfigure-device

APIs:
  ndctl_cmd_cfg_read_set_extent
  ndctl_cmd_cfg_write_set_extent
  ndctl_dimm_read_label_extent
  ndctl_dimm_read_label_index
  ndctl_dimm_zero_label_extent
  daxctl_dev_disable
  daxctl_dev_enable_devdax
  daxctl_dev_enable_ram
  daxctl_dev_get_ctx
  daxctl_dev_get_memory
  daxctl_dev_get_resource
  daxctl_dev_get_target_node
  daxctl_dev_is_enabled
  daxctl_memory_get_block_size
  daxctl_memory_get_dev
  daxctl_memory_get_node_path
  daxctl_memory_is_online
  daxctl_memory_num_sections
  daxctl_memory_offline
  daxctl_memory_online