Debugger: Split into core library and application.

- Add subfolder src/kits/debugger which contains the debugger's core
  functionality and lower layers. Correspondingly add headers/private/debugger
  for shared headers to be used by clients such as the Debugger application
  and eventual remote_debug_server. Adjust various files to account for
  differences as a result of the split and moves.
- Add libdebugger.so to minimal Jamfile.

headers/private/debugger/model/Variable.h

@@ -0,0 +1,42 @@
+/*
+ * Copyright 2009, Ingo Weinhold, [email protected].
+ * Distributed under the terms of the MIT License.
+ */
+#ifndef VARIABLE_H
+#define VARIABLE_H
+
+
+#include <String.h>
+
+#include <Referenceable.h>
+
+
+class CpuState;
+class ObjectID;
+class Type;
+class ValueLocation;
+
+
+class Variable : public BReferenceable {
+public:
+								Variable(ObjectID* id, const BString& name,
+									Type* type, ValueLocation* location,
+									CpuState* state = NULL);
+								~Variable();
+
+			ObjectID*			ID() const			{ return fID; }
+			const BString&		Name() const		{ return fName; }
+			Type*				GetType() const		{ return fType; }
+			ValueLocation*		Location() const	{ return fLocation; }
+			CpuState*			GetCpuState() const		{ return fCpuState; }
+
+private:
+			ObjectID*			fID;
+			BString				fName;
+			Type*				fType;
+			ValueLocation*		fLocation;
+			CpuState*			fCpuState;
+};
+
+
+#endif	// VARIABLE_H