The way is now open to schg and sappnd key files and directories in
our tree. There are recommendations in bin/15229.
PR: bin/15229
Reviewed by: imp, brian
to be created if it's missing, otherwise completely ignore it's modes and
owners. Primary intended targets: /usr/src and /usr/obj.
Adjust the 'not created: File exists' message to mention that it's a
directory that's the problem, otherwise it doesn't make sense.
I had created chown-style -L and -P flag to control logical/physical mode
(ie: whether symlinks were followed), but the nochange flag is enough to
get the blasted thing out of my hair so I took them back out.
