[commit: ghc] ghc-7.10: Update submodule to Cabal 1.22.1.0 release (a4b5805)

[git at git.haskell.org]

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

On branch  : ghc-7.10
Link       : http://ghc.haskell.org/trac/ghc/changeset/a4b5805f81be8da7af9e375628faaa826f80ee7f/ghc

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

commit a4b5805f81be8da7af9e375628faaa826f80ee7f
Author: Herbert Valerio Riedel <hvr at gnu.org>
Date:   Sun Feb 22 18:04:27 2015 +0100

    Update submodule to Cabal 1.22.1.0 release


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

a4b5805f81be8da7af9e375628faaa826f80ee7f
 libraries/Cabal | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/libraries/Cabal b/libraries/Cabal
index 3c0e648..9225192 160000
--- a/libraries/Cabal
+++ b/libraries/Cabal
@@ -1 +1 @@
-Subproject commit 3c0e6480d5057dd616457a0ac0458e60946c9849
+Subproject commit 9225192b7afc2b96062fb991cc3d16cccb9de1b0