Move access to SystemDependentDataHolder to Bitmap (2)

I was too positive thinking that SalBitmap would be fine,
but it's locked to vcl. To be able to add system-dependent
BitmapBuffering I move the access to Bitmap now. This is
no functional change, but offers the same access as e.g.
B2DPolygon/B2DPolyPolygon offer already.

Also cleaned up usage/access to SystemDependentDataManager
which removes quite some code in constructors and makes
things easier in general.

Change-Id: I2baa40a12479fab0fe66063a018f058c6b8f5597
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/141507
Tested-by: Jenkins
Reviewed-by: Armin Le Grand <Armin.Le.Grand@me.com>

0 files changed, 0 insertions, 0 deletions