Streamlined build process without copying around whole directory trees.

Uses filters to manage JDK 1.3 and 1.4 differences.
Beautified build.xml (2 space indents)


git-svn-id: https://svn.apache.org/repos/asf/xmlgraphics/fop/trunk@195210 13f79535-47bb-0310-9956-ffa450edef68