Log Message:
samba4: updated to 4.12.1

Samba 4.12.1
* BUG 14295: nmblib: Avoid undefined behaviour in handle_name_ptrs().
* BUG 14296: samba-tool group: Handle group names with special chars
  correctly.
* BUG 14293: Add missing check for DMAPI offline status in async DOS
  attributes.
* BUG 14295: Starting ctdb node that was powered off hard before results in
  recovery loop.
* BUG 14307: smbd: Ignore set NTACL requests which contain S-1-5-88 NFS ACEs.
* BUG 14316: vfs_recycle: Prevent flooding the log if we're called on
  non-existant paths.
* BUG 14313: librpc: Fix IDL for svcctl_ChangeServiceConfigW.
* BUG 14327: nsswitch: Fix use-after-free causing segfault in
  _pam_delete_cred.
* BUG 13622: fruit:time machine max size is broken on arm.
* BUG 14294: CTDB recovery corner cases can cause record resurrection and
  node banning.
* BUG 14332: s3/utils: Fix double free error with smbtree.
* BUG 14294: CTDB recovery corner cases can cause record resurrection and
  node banning.
* BUG 14295: Starting ctdb node that was powered off hard before results in
  recovery loop.
* BUG 14324: CTDB recovery daemon can crash due to dereference of NULL
  pointer.