fix script to not update luajit-rocks

Author: soumith

admin/updateSubmodules.sh

@@ -1,5 +1,7 @@
 git pull
 git submodule update
-git submodule foreach git pull origin master
+# dont update luajit-rocks because of https://github.com/LuaJIT/LuaJIT/issues/325
+git submodule foreach bash -c 'if [ $(basename $(pwd)) != 'luajit-rocks' ]; then git pull origin master; fi'
+# git submodule foreach git pull origin master
 git add extra pkg exe
 git commit -m "updating packages"