Upgrade issue with 3.0.21b->3.0.22

[Luke Howard]

>> Backing up a little.  The concept of a primary group
>> has been deprecated in AD unless you have "Mac or
>> POSIX compliant applications" (from the MMC Users and
>> Computer plugin in Windows 2003).
>
>This was surprising to me.  Connect to a standalone NT4
>workstation.

The user's primary group is always included in their token groups
regardless of whether they are an explicit member.

-- Luke

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