- Fixed compilation errors caused by latest changes to serialization code

- Setup makefile for xmlsave plugin. It still can`t be activated. why?
- Added a temporary command SAVE to commandline interface to try serialization

git-svn-id: svn://svn.gna.org/svn/sgpemv2/trunk@826 3ecf2c5c-341e-0410-92b4-d18e462d057c

src/backend/dynamic_process.cc

@@ -122,6 +122,10 @@ DynamicProcess::get_state() const
     if (future > 0) // running == 0 && ready == 0 && blocked == 0 && terminated == 0
       return state_future;
 
+    // I'm not sure if we can get here (maybe if there are no threads?),
+    // but I don't like this compiler warning: 'control reaches end of non-void function'
+    return state_future;
+    
 	// Since premature optimization is the root of all evil, and the
 	// following code was very fast but also very wrong, the coder
 	// will be punished by allowing her to code in C++ just after