rsync and BSD file flags.

[Jonathan Call]

I've searched the archive for references to FreeBSD's file flags and
rsync but only found one reference to it dated back in 2002. It refers
to a --flags patch that I don't see available anywhere:

http://www.mail-archive.com/rsync@lists.samba.org/msg03878.html

Is there a patch for preserving FreeBSD's flags like schg? (i.e.
immutable)

My current configuration:
Two FreeBSD 4.11 systems running rsync 2.6.3

Command being run:
/usr/local/bin/rsync -cavzHS --include-from=include-list.txt
--exclude-from=exclude-list.txt root at thisserver.mycompany.net:/ /