+ * git-debrebase: Highly experimental merge resolution support,
+ enabled only with special command line option.
+ * git-debrebase: Check in convert-from-* whether ffq-prev or
+ debrebase-last indicate that we are already in gdr format.
+ * git-debrebase: convert-from-*: leave debrebase-last refs to
+ hint to everyone that this is now a gdr branch.