* When compiling with distutils (see setup.py) the C++ compiler is

  * When compiling with distutils (see setup.py) the C++ compiler is
        called with different flags than the default ones (with automake).
        In order to fix all those warning, I compiled gdcm with the command
           make 'CXXFLAGS=-Wall -Wstrict-prototypes -D__STDC_LIMIT_MACROS'
        and went for warning fixes:
        - src/gdcmHeader.cxx, Test/dcm2acr.cxx, pourFindTaggs.cxx cleaned
          up from unused variables.
        - vtk/vtkGdcmReader.cxx: potential bug fix.
      * src/gdcmHeader.h: Doxygen warning cleanup