# consumed in the same order as generated by pass 7
	# (RevTopologicalSort). Per the code in cvs2svn.

	# This works if and only if none of the symbol changesets are
	# "backwards", hence our breaking of the backward changesets
	# first, in the pre-hook.

	# Note that tah changesets cannot be backward as they don't
	# have successors at all.

	# An interesting thing IMHO, is that after breaking the
	# backward symbol changesets we should not have any circles
	# any longer. Each circle which would still be present has to
	# involve a backward symbol, and we split them all, so there
	# can't be a circle..