Package samba: Information

- Update to maintenance release of Samba 4.16 (Samba#15134)
- Security fixes:
  + CVE-2022-3437: There is a limited write heap buffer overflow in the GSSAPI
                   unwrap_des() and unwrap_des3() routines of Heimdal (included
                   in Samba).
                   https://www.samba.org/samba/security/CVE-2022-3437.html
- Add samba-usershares package for support for non-root user shares.
- Default smb.conf simplified - homes, printers and print$ shares enabled by
  default. Original large default example smb.conf replaced to smb.conf.example.

- Update to latest stable release of Samba 4.16
- Major fixes:
  + Possible use after free of connection_struct when iterating
    smbd_server_connection->connections (Samba#15128).
  + Spotlight RPC service returns wrong response when Spotlight is
    disabled on a share (Samba#15086).
  + acl_xattr VFS module may unintentionally use filesystem
    permissions instead of ACL from xattr (Samba#15126).
  + Missing SMB2-GETINFO access checks from MS-SMB2 3.3.5.20.1.
    assert failed: !is_named_stream(smb_fname)") at
    ../../lib/util/fault.c:197 (Samba#15153).
  + Missing READ_LEASE break could cause data corruption (Samba#15148).
  + rpcclient can crash using setuserinfo(2) (Samba#15124).
  + Samba fails to build with glibc 2.36 caused by including
    <sys/mount.h> in libreplace (Samba#15132).
  + SMB1 negotiation can fail to handle connection errors (Samba#15152).
  + samba-tool domain join segfault when joining a samba ad domain (Samba#15078).

- Add support (Heimdal only) of "ignore requester sid" global option for the
  correct operation of trust relationships with oldest versions of MS AD without
  KB5008380 Authentication updates (CVE-2021-42287).