FileConverter facility from eclipse elements to java.io.File

git-svn-id: http://umple.googlecode.com/svn/trunk@3568 6ebf9d09-8eb1-0036-9d08-68c07d1b990a
now build should be ok for the umplificator

git-svn-id: http://umple.googlecode.com/svn/trunk@3569 6ebf9d09-8eb1-0036-9d08-68c07d1b990a