git: update to v2.9.1

Update to git version v2.9.1, no changes required.

Signed-off-by: Christian Hesse <mail@eworm.de>

Makefile

@@ -14,7 +14,7 @@ htmldir = $(docdir)
 pdfdir = $(docdir)
 mandir = $(prefix)/share/man
 SHA1_HEADER = <openssl/sha.h>
-GIT_VER = 2.9.0
+GIT_VER = 2.9.1
 GIT_URL = https://www.kernel.org/pub/software/scm/git/git-$(GIT_VER).tar.gz
 INSTALL = install
 COPYTREE = cp -r

git

@@ -1 +1 @@
-Subproject commit 05219a1276341e72d8082d76b7f5ed394b7437a4
+Subproject commit 5c9159de87e41cf14ec5f2132afb5a06f35c26b3