Added CreateSelectButton to cUITheme.

Added GetPrevState to cUISkinState.
Hided fonts constructors ( to avoid problems in the font manager if this are instanciated inside a function ).
Fixed the BLENDONE BlendMode.
Working in adding Polygons to the Map and Map Editor ( in very early stage ).

src/examples/empty_window/empty_window.cpp

@@ -48,5 +48,5 @@ EE_MAIN_FUNC int main (int argc, char * argv [])
 	// If was compiled in debug mode it will print the memory manager report
 	EE::MemoryManager::ShowResults();
 
-	return 0;
+	return EXIT_SUCCESS;
 }