CellBorders can be rotated (including their Text) and need special
visualization that is based on an own sheared/rotated coordinate
system. Currently only possible for single cells (not merged ones)
and needs to handle all borders (also bottom-right directly in the
rotated cell, not in the neighboured ones to have the geometry,
plus avoiding these in the non-rotated neighbour cells.
Also corrected adding CellRotation data to svx::frame::Array
in calc using SetCellRotations() which now gets called in the
ScOutputData constructor to ensure it gets called in all places
where it is used.

Change-Id: I47bdfc29ba5ca76bbc07d98cb64733f867b1ee20