Reorganize library code into libs/ (#3119)

* Reorganize files into libs/{dolphin,JSystem,PowerPC_EABI_Support,revolution,TRK_MINNOW_DOLPHIN}

* Update configure.py and project.py for new libs structure

* Refactor `#include <dolphin/x.h>` -> `<x.h>`

* Remove `__REVOLUTION_SDK__` forwards from dolphin

* Fix dolphin/ references in revolution

* Wrap `#include <dolphin.h>` in `!__REVOLUTION_SDK__`

* Always build TRK against dolphin headers

* Resolve revolution SDK header resolution issues

libs/JSystem/include/JSystem/JGadget/pointer.h

@@ -0,0 +1,33 @@
+#ifndef POINTER_H
+#define POINTER_H
+
+namespace JGadget {
+
+template<class T>
+class TPointer {
+public:
+    TPointer(T* ptr) : mPtr(ptr) {}
+    ~TPointer() {}
+    void set(T* ptr) { mPtr = ptr; }
+    T* mPtr;
+};
+
+template<class T>
+class TPointer_delete : public TPointer<T> {
+public:
+#ifdef __MWERKS__
+    TPointer_delete(T* ptr) : TPointer(ptr) {}
+    ~TPointer_delete() {
+        delete mPtr;
+    }
+#else
+    TPointer_delete(T* ptr) : TPointer<T>(ptr) {}
+    ~TPointer_delete() {
+        delete this->mPtr;
+    }
+#endif
+};
+
+}
+
+#endif