NSUInteger transition

git-svn-id: svn+ssh://svn.gna.org/svn/gnustep/apps/gworkspace/trunk@36114 72102866-910b-0410-8b05-ffd578937521
New compare methods to take in account NSNotFound

git-svn-id: svn+ssh://svn.gna.org/svn/gnustep/apps/gworkspace/trunk@36115 72102866-910b-0410-8b05-ffd578937521