import from gbp
+[ all this is done now:
inputs:
current HEAD (patches-unapplied),
this is going to be the base of the old breakwater
commit to remove d/patches
breakwater pseudomerge with upstream
"rebase" of pq branch, each commit with d/patches stripped
+]
what about dgit view branch ?
ideally, would make pseudomerge over dgit view
would need to check that dgit view is actually dgit view of
ond of our ancestors
failing that first push will need --overwrite
+
+should this be called import or gbp2debrebase as it is now ?
+gbp uses "import" oddly but I'm tempted to use it normally here.