[commit: ghc] master: Sync up `containers` submodule to latest `master`-tip (4d90b53)

[git at git.haskell.org]

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

On branch  : master
Link       : http://ghc.haskell.org/trac/ghc/changeset/4d90b534ef989169bddf0f681237fedcf93b9ed2/ghc

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

commit 4d90b534ef989169bddf0f681237fedcf93b9ed2
Author: Herbert Valerio Riedel <hvr at gnu.org>
Date:   Mon Oct 20 11:38:27 2014 +0200

    Sync up `containers` submodule to latest `master`-tip
    
    This updates `containers` to provide more specialised `Foldable`
    instance methods, see also
    
      https://github.com/haskell/containers/issues/56
    
    for more details.


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

4d90b534ef989169bddf0f681237fedcf93b9ed2
 libraries/containers | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/libraries/containers b/libraries/containers
index 085e1b8..530fc76 160000
--- a/libraries/containers
+++ b/libraries/containers
@@ -1 +1 @@
-Subproject commit 085e1b8b2cfbd1159bbc9f8cbf6a4127cc32227b
+Subproject commit 530fc76bdd17089fcaaa655d66156abbc2092c2c