http://rsync.samba.org/listproc/rsync/1033.html
Porters: please make sure you use bsd.port.mk 1.75 or later when updating ports. That version of the makefile adds all sums. Previous versions of the makefile will still work for people installing ports.
add SEPARATE_BUILD (concurrent means `full') add SHA1/RMD160 checksums.
Clean port, no patches. Similar to rdist, but leaner, and works over ssh.