SwapColorChannels + svlImageIO::write/read fail to swap color channels.

[marcinbalicki]

The following code snippet produces an incorrectly colored saved image (e.g., all blue). It should swap color channel R and B.

    std::string inputFile("testFile.bmp");
    std::string outputFile("outFile.bmp");

    svlSampleImageRGB           inputImage;
    svlSampleImageRGB           outputImage;

    int result = 0;
    result = svlImageIO::Read(inputImage, 0, inputFile, false);
    outputImage.SetSize(inputImage);

    // the following does not work when original image is bmp on mac.
    result = svlImageProcessing::SwapColorChannels(&inputImage, 0, &outputImage, 0);

    result = svlImageIO::Write(outputImage, 0, outputFile);

The input is a colored bmp file on mac OSX 10.9, cisst is compiled with opencv support.