Comment 4 for bug 562828

Because we will need to carefully dance to both Lucid and Py 2.6 in the data center at the same time, we will not be able to fully switch to Python 2.6 until at least 1.5 cycles from now. We'll want this addressed sooner.

The LOSAs and James regarded hacking os.walk into our scripts as a superior hack than bindmounts--the os.walk copy-n-paste-n-hack should be much easier for us to implement than bindmounts on their side.

I do not remember clearly why filtering the errors was rejected as a work-around, but it was, for the time of 1.5 cycles.

Therefore, we need to copy the 2.6 os.walk code and hack it to work in 2.5 if necessary.

I'm pushing a branch with this change and a test.