Revision 635508

Fixed NPE in BlockContainerLayoutManager when used as a child of an inline-level FO. Split IP and BP stack limits in LayoutContext (there's now a certain amount of redundancy with "refIPD" in LayoutContext which I didn't resolve).
Areas are now generated for block-level FOs when used as children of inline-level FOs.
ClassCastException in ListLayoutManager.mustKeepTogether() fixed (occured if used as child of an inline-level FO).