* src/gdcmDebug.cxx last ditch attempt to get warning/error messages

  * src/gdcmDebug.cxx last ditch attempt to get warning/error messages
    displayed on Win32 when a brutal abort() occurs (because of uncatched
    exception). See TODO new entry of this commit for more on this.
  * TODO added new entry.
  * CLEANUP_ROUND (12) for gdcmPixelConvert (nicotine is my friend stage)
    src/gdcmFile.[cxx|h] and gdcmPixelConvert.[cxx|h]:
    - HandleColor is no longer called from gdcmFile.cxx
    - gdcmPixelConvert.cxx clean up on method arguments and internal
      variable names for semantical coherence.