I realise I have misrepresented this work, the Linux port of rc(1) was Geoff Collyer's work, both the earlier port some years ago and a recent update which makes the port work again. I provided a minor patch or two.
There has been a win32.c in the labs distribution of rc(1) for years but it has never (to my knowledge) worked. I did a major overhall of the win32 port and back ports of a few plan9 tools to posix (I know, I know), and packaged the whole thing up. -Steve