In MATLAB >= 7.7, don't display a warning if we use deprecated interface to...

In MATLAB >= 7.7, don't display a warning if we use deprecated interface to set seed of random number generators
(cherry picked from commit a98a5106)

matlab/warning_config.m

@@ -44,4 +44,8 @@ if exist('OCTAVE_VERSION')
     warning('off', 'Octave:string-concat');
     warning('off', 'Octave:variable-switch-label');
     warning('off', 'Octave:fortran-indexing');
+else
+    % In MATLAB >= 7.7, don't display a warning if we use deprecated
+    % interface to set seed of random number generators
+    warning('off', 'MATLAB:RandStream:ActivatingLegacyGenerators');
 end