cpdup v1.22

* Add support for lchmod(), lutimes() and lchflags(), allowing symlinks
  to fully replicated.
* Fix issues when the destination of a rename is chflag'ed in a way that
  causes the rename to fail.
* Delete temporary files when a rename flies.
* Set SrcHost/DstHost.version for local sources or targets to make
  version tests easier.
* Remove the FSMID support (obsolete in DragonFly BSD since 2009).
* Fix minor typos.
* Minor makefile improvement.

cpdup v1.21

* Support microsecond timestamp precision; bumped protocol version from
  4 to 5.
* Support to build on DragonFly BSD (should also include FreeBSD) as
  well.
* Improved makefile and PKGBUILD.

cpdup v1.20

* Add '-X' option to allow to specify an exclusion file
* Fix NULL pointer indirection on lost socket
* Migrate to the LibreSSL/OpenSSL MD5 hash API
* Better support for Linux (this repo)