[Development] CI configuration changes

[Sorvig Morten]

> On 02 Feb 2015, at 10:01, Sarajärvi Tony <tony.sarajarvi at theqtcompany.com> wrote:
> 
> Hi
> 
> Here's a wiki page describing the planned changed along with a bit of version information of the tools:
> 
> http://qt-project.org/wiki/Qt-5.5.0-tools-and-versions
> 

Since OS X 10.7 is no longer CI tested that makes the status of 5.5 on that platform at least “deprecated". I still think that removing support now would be a little bit abrupt.

I've collected some of the rationale behind OS X support decisions:

https://docs.google.com/document/d/1Iff0SjZyMqXmH5WXi-8bnbwZXx-d8l2FGCa_IDElOpo/edit#

Morten