In debugging a problem with a cross-compiled binary crashing on someone elses Droid Bionic, I noticed that a bunch of dirs in / are sym-linked into /osh:
/# ls -l /
...
lrwxrwxrwx root root 2011-11-06 09:38 etc -> /osh/etc
lrwxrwxrwx root root 2011-11-06 09:38 lib -> /osh/lib...