fdo#59249: String literal needs a "b" prefix in Pyhton 3
fdo#59249: String literal needs a "b" prefix in Pyhton 3

as the corresponding test is otherwise seen to fail, with user being b, but I have
no idea if this is the most Python-3-ish approach to fix that, or whether more code
needs to be fixed, too.

Change-Id: Ia7fbcbca3cf578ffe1bd5ce3c7c5b709cc77317e

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