Let's say a programmer has been a bit careless and locked a file for
reserved edit in a branch, and didn't release that lock after being
finished committing his changes for the branch.
Now we're getting an error message if someone want to do a reserved
edit on this file on any other branch, telling us the file is still
locked somewhere, but it doesn't state where.
Is there a way to figure out on what branch that file is marked for
edit? So that we can check it out again, an release the edit lock.