Fixed incorrect calls

Description:
    Replaced the calls to the deprecated function printError with
    printErrorStack in examples.
Platforms tested:
    Linux/32 2.6 (jam)

c++/examples/readdata.cpp

@@ -182,28 +182,28 @@ int main (void)
    // catch failure caused by the H5File operations
    catch( FileIException error )
    {
-      error.printError();
+      error.printErrorStack();
       return -1;
    }
 
    // catch failure caused by the DataSet operations
    catch( DataSetIException error )
    {
-      error.printError();
+      error.printErrorStack();
       return -1;
    }
 
    // catch failure caused by the DataSpace operations
    catch( DataSpaceIException error )
    {
-      error.printError();
+      error.printErrorStack();
       return -1;
    }
 
    // catch failure caused by the DataSpace operations
    catch( DataTypeIException error )
    {
-      error.printError();
+      error.printErrorStack();
       return -1;
    }