[Pkg-samba-maint] Bug#949667: smbclient: please detail smbspool_krb5_wrapper setup

[Yvan Masson]

Package: smbclient
Version: 2:4.9.5+dfsg-5+deb10u1

Dear Maintainers,

I need to configure printing on Debian desktops in an Active Directory 
environment.

To use users' Kerberos tickets, I understand that I have to use 
/usr/lib/x86_64-linux-gnu/samba/smbspool_krb5_wrapper instead of the 
usual /usr/lib/cups/backend/smb.

The manpage explains that "smbspool_krb5_wrapper needs to be the smb 
backend" of CUPS, but it does not explain how to do this:
- should I create a symbolic link?
- should I copy the file?
- how can I ensure this modification will be preserved by future 
smbclient upgrades?
- is there a way to use default smb backend AND smbspool_krb5_wrapper at 
the same time (for different printers)?

Could you add details to this manpage or add a documentation file in 
/usr/share/doc/smbclient/?

Regards,
Yvan