[commit: ghc] master: Update unix submodule (3238ef7)

[git at git.haskell.org]

Repository : ssh://git@git.haskell.org/ghc

On branch  : master
Link       : http://ghc.haskell.org/trac/ghc/changeset/3238ef7f834ede18f076d4e8c72b9a119e4499b6/ghc

>---------------------------------------------------------------

commit 3238ef7f834ede18f076d4e8c72b9a119e4499b6
Author: Herbert Valerio Riedel <hvr at gnu.org>
Date:   Sun Nov 1 10:36:33 2015 +0100

    Update unix submodule
    
    This is needed to prepare for #11026 as this update
    relaxes the upper bounds on `base` to allow for `base-4.9.0.0`


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3238ef7f834ede18f076d4e8c72b9a119e4499b6
 libraries/unix | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/libraries/unix b/libraries/unix
index 4260c25..137fa1b 160000
--- a/libraries/unix
+++ b/libraries/unix
@@ -1 +1 @@
-Subproject commit 4260c25687d3a4bc1ffacdacfbe7e47082ff2550
+Subproject commit 137fa1b06a79a9baa0d5fcf2ec11f964c3423f6a