Merge branch 'ak/sh-setup-dot-source-i18n-fix' into maint

Recent update to git-sh-setup (a library of shell functions that
are used by our in-tree scripted Porcelain commands) included
another shell library git-sh-i18n without specifying where it is,
relying on the $PATH.  This has been fixed to be more explicit by
prefixing $(git --exec-path) output in front.

* ak/sh-setup-dot-source-i18n-fix:
  git-sh-setup: be explicit where to dot-source git-sh-i18n from.

git-sh-setup.sh

@@ -2,9 +2,6 @@
 # to set up some variables pointing at the normal git directories and
 # a few helper shell functions.
 
-# Source git-sh-i18n for gettext support.
-. 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
 # like CDPATH, define it for your interactive shell sessions without
@@ -46,6 +43,9 @@ git_broken_path_fix () {
 
 # @@BROKEN_PATH_FIX@@
 
+# Source git-sh-i18n for gettext support.
+. "$(git --exec-path)/git-sh-i18n"
+
 die () {
 	die_with_status 1 "$@"
 }