PDFBOX-1056: added preflight and xmpbox modules to reactor pom
PDFBOX-1056: added preflight and xmpbox modules to reactor pom

git-svn-id: c3ad59981690829a43dc34c293c4e2cd04bcd994@1150427 13f79535-47bb-0310-9956-ffa450edef68

gavanx/pdflearn,ChunghwaTelecom/pdfbox,mathieufortin01/pdfbox,BezrukovM/veraPDF-pdfbox,benmccann/pdfbox,mathieufortin01/pdfbox,mdamt/pdfbox,benmccann/pdfbox,mdamt/pdfbox,veraPDF/veraPDF-pdfbox,joansmith/pdfbox,gavanx/pdflearn,ZhenyaM/veraPDF-pdfbox,torakiki/sambox,ChunghwaTelecom/pdfbox,joansmith/pdfbox,torakiki/sambox,ZhenyaM/veraPDF-pdfbox,BezrukovM/veraPDF-pdfbox,veraPDF/veraPDF-pdfbox