Test the header field API for real.
Test the header field API for real.

But it crashes on exit, due to some sort of order of deletion...

Change-Id: Ife9da1c0a647038cbdc68410db5b211bcce5dfa4

JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core