Scalars have "/c0" added to their names when exporting flattened CSV with Blueprint.

[brugger1]

I exported data using the Blueprint plugin specifying flattened CSV files and the scalars had "/c0" added to their names.

To reproduce:

1. Open multi_ucd3d.silo.
2. Create a pseudocolor plot of "d".
3. Export using Blueprint format, specifying "Flatten CSV".
4. Look at the file "visit_ex_db/element_data.csv" and you will see a column with "avtGhostZone/c0". Look at the file "visit_ex_cb/vertex_data.csv" and you will see a column with "d/c0".

I assume the "c0" is to handle multiple components, but it seems like it could be eliminated if there is only a single component. The normal Blueprint export doesn't add a "c0".

This happens on develop.