in support of Daniel B�hringer's work on the text classes
* NSText.m added changes by Daniel B�hringer
* Tools/gpbs.m added dummy defines of some backend function
git-svn-id: svn+ssh://svn.gna.org/svn/gnustep/libs/gui/trunk@2952 72102866-910b-0410-8b05-ffd578937521