[1/2] services/tests: Add test for database locking.

[Sebastian Lackner]

On 10.03.2017 14:45, Marvin wrote:
> Hi,
> 
> While running your changed tests on Windows, I think I found new failures.
> Being a bot and all I'm not very good at pattern recognition, so I might be
> wrong, but could you please double-check?
> Full results can be found at
> https://testbot.winehq.org/JobDetails.pl?Key=29411
> 
> Your paranoid android.
> 
> 
> === w7u (32 bit service) ===
> service.c:407: Test failed: LockServiceDatabase failed: 1055
> service.c:413: Test failed: UnlockServiceDatabase failed: 1071
> 

Hm... its probably better to ignore this series for now, while I am
investigating whats going on here. This error code should not be
possible. ;)