When triggering a remote build via HUDSON_URL/job/job_name/build?token=TOKEN_NAME, it would be
helpful to also be able to set a description for the build that will showup in the Build History column (such
as a reason for the build, or a project specific build number, or who triggered the build, etc.).

I imagine this could be implemented as

HUDSON_URL/job/Hadoop-Patch/build?token=TOKEN_NAME&description=foobar

Special characters in the description would clearly need to be escaped.