update test cases per changes made by Villu's patch for PDFBox-660. All these are visually, but not binarily, identical.
pdfbox/trunk/src/test/resources/input/rendering/4PP-Highlighting.pdf-1.png
pdfbox/trunk/src/test/resources/input/rendering/source.pdf-1.png
pdfbox/trunk/src/test/resources/input/rendering/survey.pdf-1.png
pdfbox/trunk/src/test/resources/input/rendering/survey.pdf-2.png
pdfbox/trunk/src/test/resources/input/rendering/survey.pdf-3.png
pdfbox/trunk/src/test/resources/input/rendering/survey.pdf-4.png
pdfbox/trunk/src/test/resources/input/rendering/survey.pdf-5.png
pdfbox/trunk/src/test/resources/input/rendering/survey.pdf-6.png
pdfbox/trunk/src/test/resources/input/rendering/survey.pdf-7.png
pdfbox/trunk/src/test/resources/input/rendering/survey.pdf-8.png
pdfbox/trunk/src/test/resources/input/rendering/survey.pdf-9.png
pdfbox/trunk/src/test/resources/input/rendering/test-landscape2.pdf-1.png
