Update examples

testsuite/unload/null/prog/Main.hs

@@ -0,0 +1,11 @@
+
+import System.Plugins
+import API
+
+-- an example where we just want to load an object and run it
+
+main = do 
+    m_v   <- load "../Null.o" ["../api"] [] "resource"
+    case m_v of
+        LoadFailure _   -> error "load failed"
+        LoadSuccess m v -> do putStrLn ( show (a v) ) ; unload m