[commit: ghc] ghc-8.0: Update transformer submodule to v0.5.2.0 release (ab4f1c5)

[git at git.haskell.org]

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

On branch  : ghc-8.0
Link       : http://ghc.haskell.org/trac/ghc/changeset/ab4f1c5c0b8952cb86b157bacd06941091a5b126/ghc

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

commit ab4f1c5c0b8952cb86b157bacd06941091a5b126
Author: Herbert Valerio Riedel <hvr at gnu.org>
Date:   Wed Feb 17 18:23:08 2016 +0100

    Update transformer submodule to v0.5.2.0 release
    
    Most notably, this update pulls in documentation improvements
    and several INLINE pragmas for significant performance gains[1].
    
     [1]: https://groups.google.com/d/msg/haskell-cafe/SUKtkDI84EE/fXMBd-jNDQAJ
    
    (cherry picked from commit eee040c17ad2feb6706f206eb8ea66c7ea131921)


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

ab4f1c5c0b8952cb86b157bacd06941091a5b126
 libraries/transformers | 2 +-
 mk/warnings.mk         | 1 +
 2 files changed, 2 insertions(+), 1 deletion(-)

diff --git a/libraries/transformers b/libraries/transformers
index a2f7dd0..10348c4 160000
--- a/libraries/transformers
+++ b/libraries/transformers
@@ -1 +1 @@
-Subproject commit a2f7dd057a0ee0c6cb206609594d7a07d26a1861
+Subproject commit 10348c4bbf60debbfc82463e1035aca1cb7b51bc
diff --git a/mk/warnings.mk b/mk/warnings.mk
index d844db4..be32e3f 100644
--- a/mk/warnings.mk
+++ b/mk/warnings.mk
@@ -104,6 +104,7 @@ libraries/dph/dph-lifted-common-install_EXTRA_HC_OPTS += -Wwarn
 libraries/transformers_dist-boot_EXTRA_HC_OPTS += -fno-warn-unused-matches -fno-warn-unused-imports
 libraries/transformers_dist-install_EXTRA_HC_OPTS += -Wno-unused-matches -Wno-unused-imports
 libraries/transformers_dist-install_EXTRA_HC_OPTS += -Wno-redundant-constraints
+libraries/transformers_dist-install_EXTRA_HC_OPTS += -Wno-orphans
 
 # Turn of trustworthy-safe warning
 libraries/base_dist-install_EXTRA_HC_OPTS += -Wno-trustworthy-safe