establish GUI globals upon window open

src/dynare_gui.m

@@ -34,6 +34,8 @@ function varargout = dynare_gui(varargin)
 % You should have received a copy of the GNU General Public License
 % along with Dynare.  If not, see <http://www.gnu.org/licenses/>.
 
+evalin('base', 'global dynare_gui_ project_info model_settings');
+
 gui_State = struct('gui_Name',       mfilename, ...
                    'gui_Singleton',  1, ...
                    'gui_OpeningFcn', @dynare_gui_OpeningFcn, ...