If a change cannot be submitted because it depends on a commit that
cannot be merged the user got the following message:
Depends on change that was not submitted.
This message is not very helpful since it doesn't contain which commit
prevents the submit.
Now we return:
Depends on change that was not submitted. Commit <commit> depends on
commit <other-commit> which cannot be merged.
Change-Id: I92db5a74dea6e88bd01b0df21a394ddf21f977b5
Signed-off-by: Edwin Kempin <ekempin@google.com>
01838a813e