backport 3.4 <- 3.5 after today's freeze, but prior to ssa merge?

[Paul Schlie]

Sorry if it's a dumb notion, but as 3.5 appears to be as robust as 3.4
presently is; and be in effectively a similar temporary stage of development
pending it's merge with ssa; might it make sense to consider for the sake of
consistency and conservation of resources, focusing efforts on stabilizing
3.5 for a few weeks, and then simply adopting it as the basis of 3.4 just
prior to it's merge with ssa, which afterward will then truly form the basis
of 3.5?

(as I vaguely recall something similar in the 3.1/3.2/3.3 development days?)