EDIT: Oh, Gingerbread-only :/

EDIT 2: It seems that the only "good/working" app is PDroid (and OpenPDroid for ICS). Unfortunately, it's only available for custom ROMs, and it's a lot of work to add it to stock ROMs. It looks like that this will either need a lot of hard work to do (and be hard to install), or Android will need to do it natively. Too bad neither option is very feasible...