jstudio particle and sound OK (#2194)

* Work on object-sound

* object-particle OK

* object-sound OK

* JStudio_JAudio2 control OK

* JStudio_JParticle control OK

* JStage object OK

* JStage ambient light OK

include/JSystem/JGadget/pointer.h

@@ -0,0 +1,25 @@
+#ifndef POINTER_H
+#define POINTER_H
+
+namespace JGadget {
+
+template<class T>
+class TPointer {
+public:
+    TPointer(T* ptr) : mPtr(ptr) {}
+    void set(T* ptr) { mPtr = ptr; }
+    T* mPtr;
+};
+
+template<class T>
+class TPointer_delete : public TPointer<T> {
+public:
+    TPointer_delete(T* ptr) : TPointer(ptr) {}
+    ~TPointer_delete() {
+        delete mPtr;
+    }
+};
+
+}
+
+#endif