Update examples

testsuite/make/remake001_should_fail/Main.hs

@@ -0,0 +1,31 @@
+
+import System.Plugins
+
+import System.Directory
+   
+main = do
+        status <- make "Foo.hs" [] -- should make
+        print status
+
+        status <- make "Foo.hs" [] -- shouldn't make
+        print status
+   
+        status  <- merge "Foo.hs" "Bar.hs"
+        case status of
+                MergeFailure e    -> error $ show e
+                MergeSuccess _ _ fp -> do {
+
+        ;status <- make fp []       -- should make
+        ;() <- case status of 
+                MakeSuccess c _ -> print c
+                MakeFailure _   -> print "make failure"
+
+        ;status <- make fp []       -- shouldn't make
+        ;case status of 
+                MakeSuccess c _ -> print c
+                MakeFailure _   -> print "make failure"
+
+        ;removeFile "Foo.o" -- make test deterministic
+        }
+
+