Update examples

testsuite/make/remake001/Bar.hs

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+module Bar where
+
+bar = undefined

testsuite/make/remake001/Foo.hs

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+module Foo where
+
+foo = undefined

testsuite/make/remake001/Main.hs

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+--
+-- expected output:
+-- $ ./a.out 
+-- True
+-- False
+-- True
+-- False
+--
+
+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 e   -> error $ show e
+
+        ;status <- make fp []       -- shouldn't make
+        ;case status of 
+                MakeSuccess c _ -> print c
+                MakeFailure e   -> error $ show e
+        ;removeFile "Foo.o"
+        }
+

testsuite/make/remake001/Makefile

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+TEST=   merge/remake001
+
+TOP=../../..
+include ../../eval.mk

testsuite/make/remake001/expected

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+MakeSuccess ReComp "Foo.o"
+MakeSuccess NotReq "Foo.o"
+ReComp
+NotReq