support for mknod to windows now in cifs vfs

[Steve French]

Steve French wrote:

> Martin Koeppe wrote:
>
>>
>> Correct me if I'm wrong, but I didn't find a mount option for 
>> linux-cifs to disable the samba unix extension mode. You could 
>> imagine a samba server share, on which some cifs clients need unix 
>> extensions, and others don't have to use it.
>
>
> I made it a run time option that applied across all mounts.  Making it 
> a mount option might be better, but of course would still hit the same 
> confusion that other "smb session" and "tree connection" specific 
> mount options would have when you try to map them to multiple mounts 
> to the same share or multiple mounts to the same server.
>
>    echo 0 > /proc/fs/cifs/LinuxOptionsEnabled
>
Sorry, the above was a typoe

    echo 0 > /proc/fs/cifs/LinuxExtensionsEnabled