LICENSE: Add header to all c++ files

VelodyneHDL/PacketFileSender.cxx

VelodyneHDL/pqVelodyneHDLSource.h

VelodyneHDL/pqVelodyneManager.cxx

VelodyneHDL/pqVelodyneManager.h

VelodyneHDL/test/TestReader.cxx

VelodyneHDL/vtkPacketFileReader.h

VelodyneHDL/vtkPacketFileWriter.h

VelodyneHDL/vtkVelodyneHDLGridSource.cxx

VelodyneHDL/vtkVelodyneHDLGridSource.h

VelodyneHDL/vtkVelodyneHDLReader.cxx

VelodyneHDL/vtkVelodyneHDLReader.h

VelodyneHDL/vtkVelodyneHDLSource.cxx

VelodyneHDL/vtkVelodyneHDLSource.h

VelodyneHDL/vvCalibrationDialog.cxx

VelodyneHDL/vvCalibrationDialog.h

VelodyneHDL/vvConfigure.h

VelodyneHDL/vvLoadDataReaction.cxx

VelodyneHDL/vvLoadDataReaction.h

VelodyneHDL/vvPythonQtDecorators.h

VelodyneHDL/vvSelectFramesDialog.cxx