[commit: ghc] ghc-7.10: Update Cabal submodule to latest 1.22 snapshot (a1e2a2c)

[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/a1e2a2c875640873cb19b732317543fb8c32a731/ghc

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

commit a1e2a2c875640873cb19b732317543fb8c32a731
Author: Herbert Valerio Riedel <hvr at gnu.org>
Date:   Sat Jan 3 23:17:14 2015 +0100

    Update Cabal submodule to latest 1.22 snapshot
    
    (cherry picked from commit d84742b0df27daa2b48464ca9e71f0101e9266cc)


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

a1e2a2c875640873cb19b732317543fb8c32a731
 libraries/Cabal                 | 2 +-
 testsuite/tests/driver/T4437.hs | 4 ----
 2 files changed, 1 insertion(+), 5 deletions(-)

diff --git a/libraries/Cabal b/libraries/Cabal
index d920a43..3a7f901 160000
--- a/libraries/Cabal
+++ b/libraries/Cabal
@@ -1 +1 @@
-Subproject commit d920a43faba148ef63dff4d4a748ac5343380465
+Subproject commit 3a7f9015828745932a65d95fa985c98073fc7d95
diff --git a/testsuite/tests/driver/T4437.hs b/testsuite/tests/driver/T4437.hs
index 4120ae9..dde6da7 100644
--- a/testsuite/tests/driver/T4437.hs
+++ b/testsuite/tests/driver/T4437.hs
@@ -33,10 +33,6 @@ expectedGhcOnlyExtensions :: [String]
 expectedGhcOnlyExtensions = ["RelaxedLayout",
                              "AlternativeLayoutRule",
                              "AlternativeLayoutRuleTransitional",
-                             "DeriveAnyClass",
-                             "PatternSynonyms",
-                             "PartialTypeSignatures",
-                             "NamedWildCards",
                              "StaticPointers"]
 
 expectedCabalOnlyExtensions :: [String]