[development] Microsoft SQL Support added

[Gerhard Killesreiter]

Peter Heinrich wrote:
> Hi everybody,
> 
> I've done a quick hack to support MS-SQL-Server, since my company needed 
> that functionality.

Unfortunately, it is indeed a hack. You change several sql queries. This 
will affect either the results and/or the performance.

> I know, that MS-SQL was supported in earlier versions and that you 
> decided to drop it.

We dropped it because we lacked a maintainer.

> Since only minor changes to the system were necessary I believe that 
> supporting this database
> would not take so much.

If you can work more on it and preferably avoid changing any queries in 
core I suggest that you create a contrib project for this. We can then 
evaluate the popularity of this and then include it in the release after 
  that.

Cheers,
	Gerhard