gr-qtgui: removing Guile-specific stuff since there is no way QtGui will work with Guile yet. Changed Python QA to complete properly.
gr-qtgui: removing references to 3D waterfall plot and changning QtGui API to remove bool that turns it on/off.
gr-qtgui: qtgui builds and passes make check under new structure.
gr-qtgui: wip: moving and renaming files for new structure.
gr-qtgui: moving Python files to new structure; get rid of src directory.
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