hdf5 tests: make cpp test actually use cpp HDF5

the previous version didn't even link to libhdf5_cpp.so

test cases/frameworks/25 hdf5/main.cpp

@@ -1,29 +1,19 @@
 #include <iostream>
-#include "hdf5.h"
+#include "H5Cpp.h"
 
 
 int main(void)
 {
-herr_t ier;
 unsigned maj, min, rel;
 
-ier = H5open();
-if (ier) {
-    std::cerr << "Unable to initialize HDF5: " << ier << std::endl;
+try {
+    H5::H5Library::open();
+    H5::H5Library::getLibVersion(maj, min, rel);
+    std::cout << "C++ HDF5 version " << maj << "." << min << "." << rel << std::endl;
+    H5::H5Library::close();
+    return EXIT_SUCCESS;
+} catch (H5::LibraryIException &e) {
+    std::cerr << "Exception caught from HDF5: " << e.getDetailMsg() << std::endl;
     return EXIT_FAILURE;
 }
-
-ier = H5get_libversion(&maj, &min, &rel);
-if (ier) {
-    std::cerr << "HDF5 did not initialize!" << std::endl;
-    return EXIT_FAILURE;
-}
-std::cout << "C++ HDF5 version " << maj << "." << min << "." << rel << std::endl;
-
-ier = H5close();
-if (ier) {
-    std::cerr << "Unable to close HDF5: " << ier << std::endl;
-    return EXIT_FAILURE;
-}
-return EXIT_SUCCESS;
 }