FOP-2060: adjoining blocks with break-before="page" break-after="page" cause extra empty page

git-svn-id: https://svn.apache.org/repos/asf/xmlgraphics/fop/trunk@1632007 13f79535-47bb-0310-9956-ffa450edef68
FOP-2417: Exception caused by letter space handling in Chinese sentence

git-svn-id: https://svn.apache.org/repos/asf/xmlgraphics/fop/trunk@1632522 13f79535-47bb-0310-9956-ffa450edef68