However, seriously. I guess that the priority of integrating versioning system in TheIDE is low for two reasons:
1) We are using uvs2 and I in fact doubt that U++ users would like to do so.
2) uvs2 has quite a good GUI (actually, it is a GUI app) to display changes in sources, content etc... so the idea of "GUI encapsulation" of versioning system is not valid there.