Revision 739386

Fixed test error for transcoders.
Enabled disabling strict validation from inside the test case. This enabled activating the border/padding test case for region references.
Refactored layout engine and intermediate format tests a bit to increase code reuse.
Fixed the way border/padding are set on the area tree. The current way had unwanted side-effects for the AreaTreeParser.
Added support for border/padding on region references when parsing from area tree XML.