make --upload-pack option to git-fetch configurable

This introduces the config item remote.<name>.uploadpack to override the
default value (which is "git-upload-pack").

Signed-off-by: Uwe Kleine-König <ukleinek@informatik.uni-freiburg.de>
Signed-off-by: Junio C Hamano <junkio@cox.net>

git-parse-remote.sh

@@ -279,3 +279,16 @@ resolve_alternates () {
 		esac
 	done
 }
+
+get_uploadpack () {
+	data_source=$(get_data_source "$1")
+	case "$data_source" in
+	config)
+		uplp=$(git-repo-config --get "remote.$1.uploadpack")
+		echo ${uplp:-git-upload-pack}
+		;;
+	*)
+		echo "git-upload-pack"
+		;;
+	esac
+}