>NFS doesn't support chflags; ignore errors unless there's reason
>to believe we're losing bits. (Note, this still won't be right
>if the server supports flags and we were trying to *remove* flags
>on a file that we copied, i.e., that we didn't create.)
very bad if it is actually a device or fifo. POSIX.2 requires that a
diagnostic message be written, the file descriptor be closed, and for
cp to continue on with the rest of the files.
