[Qt-creator] Disable shadow build permanently for a project.

[Joseph Crowell]

Is there a config that can be added to the .pro file or something that 
can be uploaded to git which would automatically disable shadow building 
on fresh clones of a project? I have a project with data files in the 
run folder and a version tool which runs on each compile to generate a 
version header. Both of these things break when using shadow builds. In 
cases like this it would be nice to be able to disable shadow build on a 
project level. I don't think I am the only Qt Creator user that would 
like this. It would eliminate a bit of instruction from our wiki as well.