Adjust to 80 col width (as much as possible) and cosmetics

tutorials/gui/CPUMeter.C

tutorials/gui/Slider3Demo.C

tutorials/gui/WorldMap.C

tutorials/gui/buttonChangelabel.C

tutorials/gui/buttonTest.C

tutorials/gui/buttongroupState.C

tutorials/gui/buttonsLayout.C

tutorials/gui/calendar.C

tutorials/gui/drag_and_drop.C

tutorials/gui/guiWithCINT.C

tutorials/gui/guilabels.C

tutorials/gui/numberEntry.C

tutorials/gui/splitterHorizontal.C

tutorials/gui/splitterVertical.C