rsync: use macports patches

git.samba.org appears to have changed names recently 9b62a5b60 and it is
down again.  Macports hosts these files (which are the same as
http://rsync.samba.org/ftp/rsync/src/rsync-patches-3.1.1.tar.gz

Closes #380.
Closes #381.
Closes #383.

Signed-off-by: Jack Nagel <jacknagel@gmail.com>