Fixes for GHC 8.x, archive loading, -dynamic, and file generation

testsuite/load/plain/prog/Main.hs

@@ -0,0 +1,22 @@
+module Main (main) where
+
+import Control.Exception (handle)
+
+import System.Plugins
+
+import API
+
+fexn :: IOError -> IO ()
+fexn = print
+
+main :: IO ()
+main = handle fexn $ do
+    mf <- load "../TestIO.o" ["../api"] [] "resource"
+    case mf of
+      LoadFailure _ -> error "nope"
+      LoadSuccess _ v -> do
+        putStrLn "success"
+        engage v
+
+engage :: CLIInterface -> IO ()
+engage plugin = repl plugin