Fix a broken unit test
TRQ-2719. Add a null check when encoding an attribute.
Revert "TRQ-2719. Add a null check when encoding an attribute."

This reverts commit aec8244964e3358a2672a5956f9e739a688d64bf. This commit added a redundant
check but inadvertently changed the return code, causing problems.
TRQ-2671. Coredump in removing recyler's jobs.

Control how many threads are removing jobs from the recycler at once. Make it 1.
MOAB-7165 - Filter Compatibility QSUB - MSUB behave differently on Interactive Jobs. Had to escape the ; in the string that MOAB sends to qsub because if you had a read statement in the torque submit filter, it will cause it to hang as ; is a statement separator.
 TRQ-2733 sleep(.5) creating compiler error on centOS 5

 replaced sleep(.5) with usleep(500000)
TRQ-2739 Kilby does not check for boost headers.
TRQ-2738 Coredump in PBSD_QueueJob_hash

We were trying to dup a NULL pointer even though
we already checked to see that it was NULL.
TRQ-2737 Lock the recycle mutex before setting a job to zero.