Use GIT-1.6.0-rc0

diff --git a/git b/git
index e449f105805ffa49ccf7cf080db897ecf65a1a0f..93310a40eb022a0e36e7c618921931d8ffc31fd1 160000 (submodule)
--- a/git
+++ b/git
@@ -1 +1 @@
-Subproject commit e449f105805ffa49ccf7cf080db897ecf65a1a0f
+Subproject commit 93310a40eb022a0e36e7c618921931d8ffc31fd1