Update git to v2.10.2

* Fixes #735
* Import *sh completion and XSS patches from openSUSE

git/git-setup-i18n-fix.patch

@@ -0,0 +1,13 @@
+Index: git-2.10.0/git-sh-setup.sh
+===================================================================
+--- git-2.10.0.orig/git-sh-setup.sh	2016-09-03 03:59:09.000000000 +0200
++++ git-2.10.0/git-sh-setup.sh	2016-09-07 17:24:58.817642893 +0200
+@@ -3,7 +3,7 @@
+ # a few helper shell functions.
+ 
+ # Source git-sh-i18n for gettext support.
+-. git-sh-i18n
++. "$(git --exec-path)/git-sh-i18n"
+ 
+ # Having this variable in your environment would break scripts because
+ # you would cause "cd" to be taken to unexpected places.  If you