Added default producer to fix a bug where the PDF producer is

set to null in the default commandline usage.
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git-svn-id: https://svn.apache.org/repos/asf/xmlgraphics/fop/trunk@194186 13f79535-47bb-0310-9956-ffa450edef68

src/org/apache/fop/pdf/PDFDocument.java

@@ -193,7 +193,9 @@ public class PDFDocument {
         /* create a PDFInfo with the next object number and add to
            list of objects */
         PDFInfo pdfInfo = new PDFInfo(++this.objectcount);
-        this.objects.addElement(pdfInfo);
+	// set the default producer
+	pdfInfo.setProducer(org.apache.fop.apps.Version.getVersion());
+	this.objects.addElement(pdfInfo);
         return pdfInfo;
     }