more namespacing and cmaking

Documentation/Examples/geometry_example.cc

Documentation/Examples/helix_example.cc

Documentation/Examples/stack_example.cc

Framework/Geometry/CoordinateSystem.cc

Framework/Geometry/CoordinateSystem.h

Framework/Geometry/Helix.h

Framework/Geometry/Point.h

Framework/Geometry/QuantityVector.h

Framework/Geometry/Sphere.h

Framework/Geometry/Vector.h

Framework/Geometry/testGeometry.cc

Framework/ParticleStack/CMakeLists.txt

Framework/ParticleStack/StackOne.h

Framework/Particles/testParticles.cc

Framework/StackInterface/CMakeLists.txt

Framework/StackInterface/Stack.h

Framework/StackInterface/StackIterator.h

Framework/Units/CMakeLists.txt

Framework/Units/testUnits.cc