added Joe's check for mid-job ctl register modifications
added Joe's check for mid-job ctl register modifications

aaichsmn/tacc_stats,sdsc/xsede_stats,TACC/tacc_stats,aaichsmn/tacc_stats,TACC/tacc_stats,dimm0/tacc_stats,aaichsmn/tacc_stats,dimm0/tacc_stats,TACC/tacc_stats,TACC/tacc_stats,sdsc/xsede_stats,aaichsmn/tacc_stats,dimm0/tacc_stats,dimm0/tacc_stats,dimm0/tacc_stats,TACC/tacc_stats,sdsc/xsede_stats,sdsc/xsede_stats