[MERGE] Allow remote cat to operate again (#73500)

[Aaron Bentley]

Aaron Bentley has voted +1.
Status is now: Approved
Comment:
Yeah, I know what you mean, and diff has this same problem-- it wants "open_tree_and_branch", or something, so that you can compare trees and branches flexibly.

For details, see: http://bundlebuggy.aaronbentley.com/request/%3C20061130235720.GA1493%40larstiq.dyndns.org%3E