This provides a BitmapPrimitive2D extended by a unified
transparency component. It will decompose to a
UnifiedTransparencePrimitive2D containing a
BitmapPrimitive2D and the transparence, so no primitive
processor has to support this primitive directly - but
can if feasible. I plan to use that ASAP
Change-Id: I83ec84eaadc8ba2b21f0ba0cb1fdcf43bdc455db
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/170852
Tested-by: Jenkins
Reviewed-by: Armin Le Grand <Armin.Le.Grand@me.com>
3dcee7e080