Fix combining multiple geometries that both have and have not been split by the IDL. Also, fix the quick bounding sphere reject when splitting by the IDL.
Merge branch 'master' into geometryPipelineBugs
Fix per instance attribute indexing when geometries are split by the IDL.
Merge pull request #2289 from AnalyticalGraphicsInc/geometryPipelineBugs

Fix GeometryPipeline bugs