disable specific oox_export unit for macosx
disable specific oox_export unit for macosx

the magic number in this test does not seems to agree with Mac Retina
Display (Assumed because the non Retina tinderbox do not complain)

Change-Id: I247215b59995e4ffc01720da4988e7eaa8ac78ca

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