Documentation fix for unloadAll and example for loading of a shared library (called loadCLib).

examples/loadCLib/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 err -> error (unlines err)
+        LoadSuccess m v -> do putStrLn ( show (a v) ) ; unload m

examples/loadCLib/null/prog/expected

@@ -0,0 +1 @@
+42