qtgui: missed this when updating time info.
qtgui: removed all traces of highResTimeFunctions.h
qtgui: replace timespec with typedef so its easier to replace
gr-qtgui: Passing vectors of data to update plot for stability; also moving responsibility of keeping track of plot updates out to qtgui_sink instead of inside plot qidget.
gr-qtgui: moving towards allowing time plot to have multiple connections.
gr-qtgui: setting up ability to have multiple connections to the time sink.
gr-qtgui: adding time-domain plot specific event updater.
gr-qtgui: restructuring qtgui directory to new layout.