vcl tiled rendering: fix invalidation callback in Impress
vcl tiled rendering: fix invalidation callback in Impress

Even if map mode is disabled, we have to check if the map mode is 100th
mm, and if so, do the mm100 -> twips conversion. This was not visible
previously due to the full repaints fixed by commit
7b8a59807806dbf6ec759a836c873b435e09e907 (sd: when tiled rendering,
disable map mode early, 2015-03-20).

Change-Id: I57862b43cc45ef864d7ec05c47b136e534ba2d54

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