Reformatting only (spacing, comments) patch for this very old code.
Removing getters for public data members in ExodusII_IO_Helper.

Fixing some docs.
Use C++ data structures in ExodusII_IO_Helper::NamesData.

NamesData no longer provides the write_to_exodus() function, it
has instead been generalized so that it can be used in other places.
Use the NamesData object in the following ExodusII_IO_Helper routines:
* get_nodal_var_names()
* get_elemental_var_names()
* initialize_element_variables()
* initialize_nodal_variables()
* initialize_global_variables()

Removing the old "vvc" stuff which was just ridiculous.
Merge branch 'exII_refactor'