ensure subupdates are performed on first clone

forgebuild.sh

@@ -350,6 +350,11 @@ for p_name in ${PROJECTS[*]}; do
         fi
     	cd $p_dir
 
+        # Submodule updates, maybe?
+        if [ -f $BASEDIR/$p_name.subupdates ]; then
+            subupdates $dvcs
+        fi
+
         # checkout a specific branch/commit
         if [ -f $BASEDIR/$p_name.checkout ]; then
             p_branch="$(cat $BASEDIR/$p_name.checkout)"