I think I've tracked this down, mostly. The patch was rejected from the mailing list because it was too big. (Several hundred k.)
You can find it in RT as 26056: [PATCH] Unify PMC accessor macros 2 26057: [PATCH] Unified PMC/PObj accessors phase 2 (26057 is one that points to a URL. Gordon, should I merge the two tickets?) Don't be afraid to email perlbug dash admin at perl.org with problems like this. I'll track them down as quick as I can. -R > I've submitted a patch to bugs-parrot, and it didn't seem to get posted > to RT or otherwise handled. Anyone know where it might've gone?