Avoid using deprecated flags in the testsuite tests

testsuite/tests/ghc-regress/arrows/should_compile/arrowapply1.hs

-{-# OPTIONS -farrows #-}
+{-# LANGUAGE Arrows #-}
 
 module ShouldCompile where
 

testsuite/tests/ghc-regress/arrows/should_compile/arrowapply2.hs

-{-# OPTIONS -farrows #-}
+{-# LANGUAGE Arrows #-}
 
 module ShouldCompile where
 

testsuite/tests/ghc-regress/arrows/should_compile/arrowapply3.hs

-{-# OPTIONS -farrows #-}
+{-# LANGUAGE Arrows #-}
 
 module ShouldCompile where
 

testsuite/tests/ghc-regress/arrows/should_compile/arrowapply4.hs

-{-# OPTIONS -farrows #-}
+{-# LANGUAGE Arrows #-}
 
 module ShouldCompile where
 

testsuite/tests/ghc-regress/arrows/should_compile/arrowapply5.hs

-{-# OPTIONS -farrows #-}
+{-# LANGUAGE Arrows #-}
 
 module ShouldCompile where
 

testsuite/tests/ghc-regress/arrows/should_compile/arrowcase1.hs

-{-# OPTIONS -farrows #-}
+{-# LANGUAGE Arrows #-}
 
 module ShouldCompile where
 

testsuite/tests/ghc-regress/arrows/should_compile/arrowdo1.hs

-{-# OPTIONS -farrows #-}
+{-# LANGUAGE Arrows #-}
 
 module ShouldCompile where
 

testsuite/tests/ghc-regress/arrows/should_compile/arrowdo2.hs

-{-# OPTIONS -farrows #-}
+{-# LANGUAGE Arrows #-}
 
 module ShouldCompile where
 

testsuite/tests/ghc-regress/arrows/should_compile/arrowdo3.hs

-{-# OPTIONS -farrows #-}
+{-# LANGUAGE Arrows #-}
 
 -- test for out-size tuples: takes a _long_ time to compile
 

testsuite/tests/ghc-regress/arrows/should_compile/arrowform1.hs

-{-# OPTIONS -farrows #-}
+{-# LANGUAGE Arrows #-}
 
 module ShouldCompile where
 

testsuite/tests/ghc-regress/arrows/should_compile/arrowif1.hs

-{-# OPTIONS -farrows #-}
+{-# LANGUAGE Arrows #-}
 
 module ShouldCompile where
 

testsuite/tests/ghc-regress/arrows/should_compile/arrowlet1.hs

-{-# OPTIONS -farrows #-}
+{-# LANGUAGE Arrows #-}
 
 module ShouldCompile where
 

testsuite/tests/ghc-regress/arrows/should_compile/arrowrec1.hs

-{-# OPTIONS -farrows #-}
+{-# LANGUAGE Arrows #-}
 
 module ShouldCompile where
 

testsuite/tests/ghc-regress/arrows/should_fail/arrowfail001.hs

-{-# OPTIONS -farrows -fglasgow-exts #-}
+{-# OPTIONS -fglasgow-exts #-}
+{-# LANGUAGE Arrows #-}
 
 -- Crashed GHC 6.4 with a lint error
 -- because of the existential

testsuite/tests/ghc-regress/arrows/should_fail/arrowfail001.stderr

 
-arrowfail001.hs:15:35:
+arrowfail001.hs:16:35:
     Ambiguous type variable `a' in the constraint:
-      `Foo a' arising from a use of `foo' at arrowfail001.hs:15:35-37
+      `Foo a' arising from a use of `foo' at arrowfail001.hs:16:35-37
     Probable fix: add a type signature that fixes these type variable(s)

testsuite/tests/ghc-regress/arrows/should_fail/arrowfail002.hs

-{-# OPTIONS -farrows #-}
+{-# LANGUAGE Arrows #-}
 
 module ShouldFail where
 

testsuite/tests/ghc-regress/arrows/should_fail/arrowfail003.hs

-{-# OPTIONS -farrows #-}
+{-# LANGUAGE Arrows #-}
 -- Arrow commands where an expression is expected
 
 module ShouldFail where

testsuite/tests/ghc-regress/arrows/should_run/arrowrun001.hs

-{-# OPTIONS -farrows #-}
+{-# LANGUAGE Arrows #-}
 
 -- Toy lambda-calculus interpreter from John Hughes's arrows paper (s5)
 

testsuite/tests/ghc-regress/arrows/should_run/arrowrun002.hs

-{-# OPTIONS -farrows #-}
+{-# LANGUAGE Arrows #-}
 
 -- Homogeneous (or depth-preserving) functions over perfectly balanced trees.
 

testsuite/tests/ghc-regress/arrows/should_run/arrowrun003.hs

-{-# OPTIONS -farrows #-}
+{-# LANGUAGE Arrows #-}
 
 module Main(main) where