Added PTHREADS requirement for OPENEXR package, because it needs  to be linked in even for OPENEXR to be successfully detected. This may result in a bit of command-line redundancy.  Drag.  I'll  have to think about this some more.
Added PTHREADS requirement for OPENEXR package, because it needs 
to be linked in even for OPENEXR to be successfully detected.
This may result in a bit of command-line redundancy.  Drag.  I'll 
have to think about this some more.


AveRapina/visionworkbench,AveRapina/visionworkbench,DougFirErickson/visionworkbench,DougFirErickson/visionworkbench,fengzhyuan/visionworkbench,DougFirErickson/visionworkbench,fengzhyuan/visionworkbench,fengzhyuan/visionworkbench,AveRapina/visionworkbench,fengzhyuan/visionworkbench,AveRapina/visionworkbench,AveRapina/visionworkbench,DougFirErickson/visionworkbench,fengzhyuan/visionworkbench,DougFirErickson/visionworkbench,AveRapina/visionworkbench,DougFirErickson/visionworkbench,fengzhyuan/visionworkbench,fengzhyuan/visionworkbench