Morpho

A couple comments/questions:
Using Apache FOP would be nice since we are going from XML->PDF. There's a ton in the FO spec for laying out the document format and the sky is kind of the limit on how we want it to look.
Do we want it to be exactly like the existing HTML metadata outputs?
Should it skinnable with the ability to add header graphics, change fonts, etc?

Super simple code to do the transformation:

public void export(String inputFile, String outputFile) throws IOException, DocumentException {
        OutputStream os = new FileOutputStream(outputFile);

        String tidyFile = inputFile + ".tidy";
        OutputStream tidyOut = new FileOutputStream(tidyFile);

        Tidy tidy = new Tidy();
        tidy.setXHTML(true);
        tidy.parse(new FileInputStream(inputFile), tidyOut);

        String url = new File(tidyFile).toURI().toURL().toString();

        ITextRenderer renderer = new ITextRenderer();
        renderer.setDocument(url);
        renderer.layout();
        renderer.createPDF(os);
        os.close();

    }

I've added a class and corresponding test to the EML project that renders a sample EML file as both HTML and PDF using the default CSS. 'ant runonetest' will allow you to run it (HtmlToPdfTest is the default class to run). The output will be in build/tests/eml-sample.xml.html and build/tests/eml-sample.xml.pdf