i18n: git-stash: mark messages for translation

Signed-off-by: Vasco Almeida <vascomalmeida@sapo.pt>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

git-stash.sh

@@ -265,7 +265,7 @@ save_stash () {
 	create_stash "$stash_msg" $untracked
 	store_stash -m "$stash_msg" -q $w_commit ||
 	die "$(gettext "Cannot save the current status")"
-	say Saved working directory and index state "$stash_msg"
+	say "$(eval_gettext "Saved working directory and index state \$stash_msg")"
 
 	if test -z "$patch_mode"
 	then
@@ -548,7 +548,7 @@ pop_stash() {
 		drop_stash "$@"
 	else
 		status=$?
-		say "The stash is kept in case you need it again."
+		say "$(gettext "The stash is kept in case you need it again.")"
 		exit $status
 	fi
 }