PDFBOX-1564: Extending COSName to produce PDF/A with correct OutputIntents
https://issues.apache.org/jira/browse/PDFBOX-1564

Creation of the PDOutputIntent class and modification of related classes
New common COSName added
Simple example to create a PDF/A added to pdfbox-example

git-svn-id: https://svn.apache.org/repos/asf/pdfbox/trunk@1468195 13f79535-47bb-0310-9956-ffa450edef68