[commit: ghc] wip/andrey/windows-doc: Update Cabal submodule to latest master branch tip (d0b8a16)

[git at git.haskell.org]

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

On branch  : wip/andrey/windows-doc
Link       : http://ghc.haskell.org/trac/ghc/changeset/d0b8a16e388480306c5a07f8bd5172cff84138d4/ghc

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

commit d0b8a16e388480306c5a07f8bd5172cff84138d4
Author: Herbert Valerio Riedel <hvr at gnu.org>
Date:   Wed Jan 23 01:01:15 2019 +0100

    Update Cabal submodule to latest master branch tip


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

d0b8a16e388480306c5a07f8bd5172cff84138d4
 libraries/Cabal | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/libraries/Cabal b/libraries/Cabal
index 98fcb3a..97484d8 160000
--- a/libraries/Cabal
+++ b/libraries/Cabal
@@ -1 +1 @@
-Subproject commit 98fcb3a964a4deef67920020a4a02d4d8552cc19
+Subproject commit 97484d8e46f3c542523ef5daf5470540a4d66cb6