ptree zone handling is broken
11906 Add line drawing characters to ptree(1)
ptree zone handling is broken.
The problem is that proc_walk is defined not to iterate on SSYS procs. But this
means we don't include zone's "zsched" processes. As a result, all zone processes
end up as orphaned children of proc0, and are therefore ignored unless -a is also specified.
This can hopefully be fixed by adding a PROC_WALK_SYS flag to proc_walk().