Declare language extensions via `{-# LANGUAGE -#}`

Only language extensions not active when `-XHaskell2010` is enabled are
declared, this way we can drop many redundant
`{-# LANGUAGE ForeignFunctionInterface #-}` occurences. This commit also
removes/replaces some `{-# OPTIONS_GHC -XRecordWildCards #-}` pragmas.

Signed-off-by: Herbert Valerio Riedel <hvr@gnu.org>

1 files changed, 2 insertions, 0 deletions

diff --git a/tests/signals001.hs b/tests/signals001.hs
index fdad7a9..20c1d89 100644
--- a/tests/signals001.hs
+++ b/tests/signals001.hs
@@ -1,3 +1,5 @@
+{-# LANGUAGE CPP #-}
+
 import System.Posix.Signals
 
 #include "ghcconfig.h"