1.) Moved the Renderer creation further down from AreaTree to RenderPagesModel (subcl...

1.) Moved the Renderer creation further down from AreaTree to RenderPagesModel (subclass of AreaTreeModel).  Still have the issue of the four-param constructor a bit messy, also some of the exceptions I have to declare to be thrown may not be necessary.

2.) Removed encapsulation-breaking methods from AreaTree; dropped the AreaTreeBuilder class as it wasn't conformant with our API and required too many objects to expose internal functionality.

3.) Validity checking added for fo:title, however still won't work as #PCDATA needs <fo:blocks> around it within FOP, but the Recommendation bans those for fo:title.

4.) isInlineItem() added to FObj, as a quick check for the %inline; parameter entity as defined in spec.

git-svn-id: https://svn.apache.org/repos/asf/xmlgraphics/fop/trunk@197763 13f79535-47bb-0310-9956-ffa450edef68