[SAMBA4] highestCommitedUSN support

[simo]

On Fri, 2006-02-24 at 00:21 +1100, tridge at samba.org wrote:
> Andrew,
> 
> 3rd version, this time with uSNCreated and uSNChanged support. If Simo
> is happy with this I'll commit while you're on your bike ride :)

Is there a specific reason to put it into the opaque structure?

I would rather use an explicit function pointer into the ldb context, to
be NULL if the backend does not support this functionality.
And have a common function in ldb/common/ldb.c that calls the ldb
context specified one or return an error.

Simo.

-- 
Simo Sorce
Samba Team
email: idra at samba.org
http://samba.org/~idra