Tracked down the build farm breakage.

[Jeremy Allison]

Don't know what the correct fix is yet.

wbinfo --domain-groups

calls into winbindd, which has no group mappings
set up in the group mapping ldb database in the
build farm. It returns NSS_STATUS_SUCCESS,
but an empty response.extra_data.data field (as
there were no groups to enumerate).

wbinfo flags this as an error at line 1129
and returns false.

This used to work in the build farm. I'm not
sure what changed so don't know immediately
how to fix. Feel free to call me when you've
got time to work on this. I've checked out
the 3.0.x code and it's not substantially
different here.

Jeremy.