[cmake-developers] Printing the origin of include dirs

[Stephen Kelly]

Stephen Kelly wrote:

> More of the useful code for that was in my branch, but it's independent of
> this whole command API question, so I've cherry-picked it out of there and
> put it in the include-dirs-debugging branch of my clone.

https://gitorious.org/~steveire/cmake/steveires-
cmake/commit/70e05a18e150120a686a268a9f8fa5b662552e93