[commit: ghc] master: Update Cabal submodule to latest snapshot (e4cc19d)

[git at git.haskell.org]

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

On branch  : master
Link       : http://ghc.haskell.org/trac/ghc/changeset/e4cc19de4bdbccea589d41717e31d63b088a8990/ghc

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commit e4cc19de4bdbccea589d41717e31d63b088a8990
Author: Herbert Valerio Riedel <hvr at gnu.org>
Date:   Tue Dec 29 22:19:54 2015 +0100

    Update Cabal submodule to latest snapshot


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e4cc19de4bdbccea589d41717e31d63b088a8990
 libraries/Cabal | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/libraries/Cabal b/libraries/Cabal
index 679812d..072e472 160000
--- a/libraries/Cabal
+++ b/libraries/Cabal
@@ -1 +1 @@
-Subproject commit 679812d2b679af952a7c9ab45a9a3a3476874a07
+Subproject commit 072e4728079e6caf521339e3934e1279aa09e83d