[Generic] Add --disable-tests

[Saulius Krasuckas]

* On Wed, 25 Apr 2007, Saulius Krasuckas wrote:
> * On Tue, 9 Jan 2007, Maarten Lankhorst wrote:
> > 
> > This patch adds --disable-tests, but keeps --enable-tests by default,
> > this is very useful for regression testing with a specific app because
> > it saves a lot of building time.
> 
> Can this patch go into the GIT, any objections?

Argh:
http://www.winehq.org/pipermail/wine-patches/2007-January/034643.html