* du can now process much deeper hierarchies on some systems (subject to
mmap support, size of virtual memory, etc.). Before, it would segfault
on hierarchies deeper than 20,000-30,000 levels due to stack limitation
- and excessive recursion.
+ and excessive recursion. But I've disabled that for now. It worked only
+ on Linux and is a bit of a kludge. Coming soon: a better way: fts.
* test now works properly when invoked from a set user ID or set group ID
context and when testing access to files subject to alternate protection
mechanisms. For example, without this change, a set-UID program that invoked