Revision 407541

Extended PageViewport to carry foreign attributes.
Foreign attributes from simple-page-master are transferred to the PageViewport.
Added foreign attributes handling in AreaTreeParser.
Fixed proper generation of foreign attributes in XMLRenderer.
EvalCheck extended so it can use namespace prefix mappings in its context.
Test case for foreign attributes.

Paper source/tray support for PCL (pcl:paper-source="<tray-code>" on s-p-m)