fdo#77307: Compare external formula tokens correctly.
fdo#77307: Compare external formula tokens correctly.

To avoid different external (add-in) tokens from being evaluated equal.

Change-Id: If78187901bdca7fe0da50442b0bb66e0650dc70f

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