Comment 2 for bug 1081775

Directories wouldn't have save me either. Here's what Dojo looks like.

./library/dojo/tests/cache
./library/dojo/tests/cache/object.html
./library/dojo/tests/cache/regular.html
./library/dojo/tests/cache/sanitized.html

A more conservative approach is probably better. Maybe we could give the users the option with a warning or we can start collect a list of more precise paths that we absolutely know are cache/tmp files?