Renamed GradientFactory into GradientMaker
Moved PDF/PSGradientMaker into dedicated packages

Factory stands for a pattern relating to application deployment. This is just about rendering a gradient to a certain output format.


git-svn-id: https://svn.apache.org/repos/asf/xmlgraphics/fop/branches/FOP-2393_gradient-rendering@1609758 13f79535-47bb-0310-9956-ffa450edef68