Add upstreamMerge script to paper tool

paper

@@ -74,6 +74,9 @@ case "$1" in
     "td" | "testdir")
         cd "${PAPER_TEST_DIR:-$basedir/work/test-server}"
     ;;
+    "u" | "up" | "upstream")
+        scripts/upstreamMerge.sh "$basedir" "$2"
+    ;;
     "r" | "root")
         cd "$basedir"
     ;;
@@ -149,6 +152,7 @@ case "$1" in
         echo "  * p, patch          | Apply all patches to the project without building it. Can be run from anywhere."
         echo "  * j, jar            | Apply all patches and build the project, paperclip.jar will be output. Can be run from anywhere."
         echo "  * m, mcdev          | Setup decompiled sources for non-modified NMS files to be imported into an IDE. Can be run from anywhere."
+        echo "  * u, up, upstream   | Updates the submodules used by Paper to their latest upstream versions."
         echo "  * t, testserver     | Run the test server with the set of plugins Paper uses as a basis for server tests."
         echo ""
         echo " These commands require the setup command before use:"

scripts/upstreamMerge.sh

@@ -16,4 +16,9 @@ function update {
 update Bukkit
 update CraftBukkit
 update Spigot
+
+if [[ "$2" = "all" ]] ; then
+	update BuildData
+	update Paperclip
+fi
 )