"diff -r submit:" should not need to look at the parent

[Stefan Monnier]

Am I the only one annoyed at the fact that "bzr diff -rsubmit:" has to
look at the parent branch (which is particularly annoying if that
branch is remote and you're not connected), even tho "all" the needed
data is already present locally?
Arch got this right (thanks to its distinction between the name and the
location(s) of a branch).


        Stefan