Fix for new Octave behaviour related to the save command.

Octave does not add the *.mat extension by default.

src/@dseries/save.m

@@ -103,7 +103,7 @@ end
 %$ % Instantiate a time series object.
 %$ try
 %$    ts1 = dseries(A,[],A_name,[]);
-%$    save(ts1,[],'csv');
+%$    save(ts1,'ts1','csv');
 %$    t = 1;
 %$ catch
 %$    t = 0;
@@ -124,7 +124,7 @@ end
 %$ % Instantiate a time series object.
 %$ try
 %$    ts1 = dseries(A,[],A_name,[]);
-%$    save(ts1,[],'m');
+%$    save(ts1,'ts1','m');
 %$    t = 1;
 %$ catch
 %$    t = 0;
@@ -145,7 +145,7 @@ end
 %$ % Instantiate a time series object.
 %$ try
 %$    ts1 = dseries(A,[],A_name,[]);
-%$    save(ts1,[],'mat');
+%$    save(ts1,'ts1','mat');
 %$    t = 1;
 %$ catch
 %$    t = 0;

src/read/load_mat_file_data.m

@@ -93,7 +93,7 @@ end
 %$ TEX__ = NAMES__;
 %$ hagop  = [1; 2; 3; 4; 5];
 %$ bedros = [2; 3; 4; 5; 6];
-%$ save('datafile_for_test');
+%$ save('datafile_for_test.mat');
 %$
 %$ % Try to read the data mat-file
 %$ t = zeros(8,1);
@@ -129,7 +129,7 @@ end
 %$ TEX__ = NAMES__;
 %$ hagop  = [1, 2, 3, 4, 5];
 %$ bedros = [2, 3, 4, 5, 6];
-%$ save('datafile_for_test');
+%$ save('datafile_for_test.mat');
 %$
 %$ % Try to read the data mat-file
 %$ t = zeros(8,1);