Add smb3 mount helper

[Aurélien Aptel]

Steve French <smfrench at gmail.com> writes:
>     We want to encourage use of more secure SMB3, and don't want
>     people using cifs and this new helper makes it less confusing:
>          "mount -t smb3"
>     rather than
>          "mount -t cifs"
>     Users can still mount the old way, but if they use smb3 mount
>     helper (mount.smb3 or "mount -t smb3") it will be less confusing
>     and less likely to use older insecure dialects.

I don't think duplicating the source is a good idea. Could we just make
a symlink or hardlink at installation? Alternatively move the common
code to a separate file.


Cheers,
-- 
Aurélien Aptel / SUSE Labs Samba Team
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