Bugfix for layout of block-containers with fixed BPD. They weren't properly broken over to the next page if they didn't fit. If autoHeight is false, the whole block-container is considered a non-breakable block. Seems to match the behaviour of other implementations but I still haven't found the right place in the spec.
xmlgraphics/fop/trunk/src/java/org/apache/fop/layoutmgr/BlockContainerLayoutManager.java