We have a need to trigger Hudson to build a project tree based on a known
Perforce Changelist number. This may seem backwards from the Hudson paradigm,
but our existing build system checks out a build ID file and increments a build
counter along with saving the Changelist number being used to submit the
change. This Changelist number is then used to synch the entire branch to a
known moment in time. This approach was chosen over applying a label to avoid
the overhead of applying 4-5000 labels to our source. Using the known
Changelist eleminates mistakenly including any changes that occur after the
know point in time.

Is this possible using the Perforce plugin, or with any combination of existing
plugins?

Would this be a feasable/desirable enhancement for the existing Perforce plugin?