[Samba] Upgrade 4.8 to 4.9 with Backend-Change to lmdb?

[Stefan G. Weichinger]

Am 17.10.18 um 11:48 schrieb Andrew Bartlett:
> On Wed, 2018-10-17 at 11:24 +0200, Stefan G. Weichinger via samba
> wrote:
>>
>> Is that mentioned backend change obligatory?
> 
> No.  Indeed it is experimental, we are keen to hear how it works in the
> real world, but we are pretty pleased with the lab performance.

Glad to hear, but I assume my small environments (<50 users) won't be 
much of a meaningful benchmark here ;-)

Aside from the fact that it's "prod" and not "lab" here ... so I have to 
be careful with changes.