For Cells with DoubleLine the connections to perpendicular
DoubleLine-Styles may have to be displayed in a Cell which
is 'around' the orig cell in a Cell-Border of one. To represent
that and to avoid repaint errors when scrolling in, the preparation
of Primitives has to take accordingly more neighbour cells into
account. Tested this change with the usages in Calc, UI (Dialogs)
and Calc exports Print/PrintPreview/PDF. This does not affect
Tables in Writer and/or Draw/Impress.

Change-Id: I3bcc68cdf7b4fc1825a87a9773892c359421024e