I've posted pdfreflow-0.8.4.zip to the original post. Here are the release notes:
- now building for Ubuntu 8.04 Hardy Heron and Mac OSX 10.5 Leopard (and later)
- documents using double spaced lines are supported
- don't print all debug options in --help, but added --showdebug option instead
- documents with only large fonts would not reflow correctly
- added --lineheight debugging option to print line height frequency