Explicitly include qglobal.h before all the ?master includes?. This makes sure that macros like Q_CORE_EXPORT are already defined for all parsed header files. Starting with this commit, QtD should build successfully against the pre-built Cocoa packages on OS X 10.6.

add_subdirectory(layouts)
add_subdirectory(draganddrop)
add_subdirectory(itemviews)
add_subdirectory(mainwindows)
add_subdirectory(opengl)
add_subdirectory(tutorials)
add_subdirectory(widgets)
add_subdirectory(desktop)
add_subdirectory(dialogs)