Added code for writing the contained triangles of the OBBs to the file with them.
Correction to the average time reported by the sweep program.
Updated boxes to be added individually to files representing each box w/ its contained triangles for a given depth.
Corrected a moab call for which no error value was set.
Updated the write_obbs program and obbhexwriter to take a flag indicating whether or not to write the subsets of file with individual boxes and triangles.