Update cosmotool 2nd part

external/cosmotool/python/safe_gadget.hpp

@@ -0,0 +1,29 @@
+#include "config.hpp"
+#include "loadGadget.hpp"
+#include <string>
+
+static inline
+CosmoTool::SimuData *loadGadgetMulti_safe(const std::string& fname, int flags, int gadgetFormat)
+{
+  try
+    {
+      return CosmoTool::loadGadgetMulti(fname.c_str(), -1, flags, gadgetFormat);
+    }
+  catch (const CosmoTool::Exception& e)
+    {
+      return 0;
+    }
+}
+
+
+static inline
+CosmoTool::SimuData **alloc_simudata(int n)
+{
+  return new CosmoTool::SimuData *[n];
+}
+
+static inline
+void del_simudata(CosmoTool::SimuData **s)
+{
+  delete[] s;
+}