Port in Lukasz Flis' work on out of memory conditions. One makes pbs_mom not get killed in out of memory conditions - this is settable via a parameter and the other allows users to add an out of memory adjustment score to their jobs. Larger scores make jobs more likely to be killed in out of memory conditions, negative scores make it less likely.
Update the CHANGELOG with a note for the OOM changes.
Merge branch '4.2-dev' of https://github.com/adaptivecomputing/torque into 4.2-dev