TableRef: simplify logic a little
TableRef: simplify logic a little

The #All keyword can be prefixing a column range anyway, so needs to be
treated like all other keywords.

Change-Id: Ic64a5caeff1c6b2d116b21c0c855c7207d649a8d

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