Log: show differences recursive into submodules

As in the GIT the diff recursive to submodules is already available, I would really love to use them on a graphical GUI of Smartgit as well. In the latest version we only see that there was a commit reference change on the submodule level, but we don't see what happened inside. So, we go to the submodule, search for the commit hashes and check the differences, but it is sometimes very annoying and tedious.