more changes to the validator

git-svn-id: http://umple.googlecode.com/svn/trunk@3486 6ebf9d09-8eb1-0036-9d08-68c07d1b990a
fix build

git-svn-id: http://umple.googlecode.com/svn/trunk@3487 6ebf9d09-8eb1-0036-9d08-68c07d1b990a