added ability to provide custom name to the pd-gui instance (for combining all...

added ability to provide custom name to the pd-gui instance (for combining all windows under the same icon on recent WMs (like Ubuntu's Unity), made all toplevel windows inside pd.tk inherit the class name of the root window, added new ways to select and edit text inside an object (ctrl+left and ctrl+right take you to the next argument, ctrl+shift+left/right select the same space, shift+left/right alter selection, home/end or down/up take you to the end/beginning of the text entry).