Update git to v1.7.12.4

No changes needed.

Signed-off-by: John Keeping <john@keeping.me.uk>

diff --git a/git b/git
index d0f1ea6003d97e63110fa7d50bb07f546a909b6e..7e2010537e96d0a1144520222f20ba1dc3d61441 160000 (submodule)
--- a/git
+++ b/git
@@ -1 +1 @@
-Subproject commit d0f1ea6003d97e63110fa7d50bb07f546a909b6e
+Subproject commit 7e2010537e96d0a1144520222f20ba1dc3d61441