[QBS] systemIncludePaths not forwarded to moc

Hey all, I am not sure, but I think I found a bug in the Qt modules for QBS: cpp.systemIncludePaths are not added to moc via -I, only cpp.includePaths. Is that intended behavior, or a bug? If you depend on another Qt project that defines a Q_INTERFACE, the depending projects moc needs that.

Re: [QBS] How to contribute to updating the documentation

Hi Jake, Thanks for the warning of impending change, and thanks for your work in this area! :) Having got things working with the existing variables for the time being, and continuing my quest, I had a quick look at that changeset, and didn't see anything there related to architecture, so far so