I tried to dig up the corresponding commit from the old collabnet repo
(revision 32778) to the corresponding one in the a.o repo.
r872853 contains the following log message: "Follow up to r32778 with
the appropriate notes for the future 1.6 release."
From that one, the fact that that both commits are from the same
contributor (kfogel), and the corresponding log message matching the
content from the 1.6-release notes page, I conclude that the
corresponding previous commit (r872853) is the one which previously was
referred to as r32778 in the collabnet repository: