Fix an issue with requeued jobs not releasing their ALPS reservations. This is fixed in two places: 1) pbs_mom will release the reservation after telling pbs_server that the job should be requeued, and 2) pbs_server will no longer hold any reservations as valid once resources are released from a job.
Merge branch '4.1-dev' of https://github.com/actorquedeveloper/torque into 4.1-dev
Update the CHANGELOG with the notes for the ALPS requeuing jobs fix.