[commit: ghc] master: Update containers to 0.5.2.1 release (d6c4467)

[git at git.haskell.org]

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

On branch  : master
Link       : http://ghc.haskell.org/trac/ghc/changeset/d6c44672849d3a42d0f986d171025355466d9c7c/ghc

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

commit d6c44672849d3a42d0f986d171025355466d9c7c
Author: Herbert Valerio Riedel <hvr at gnu.org>
Date:   Fri Aug 30 13:04:12 2013 +0200

    Update containers to 0.5.2.1 release
    
    (+ local fix for PolyTypeable)


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

d6c44672849d3a42d0f986d171025355466d9c7c
 libraries/containers |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/libraries/containers b/libraries/containers
index 41bc140..154cd53 160000
--- a/libraries/containers
+++ b/libraries/containers
@@ -1 +1 @@
-Subproject commit 41bc140a140143fa517df4c1a08365474cde4d14
+Subproject commit 154cd539a22e4d82ff56fec2d8ad38855f78513a