Upgrade .NET build to use IKVM 0.42 per PDFBOX-675
Upgrade .NET build to use IKVM 0.42 per PDFBOX-675

git-svn-id: c3ad59981690829a43dc34c293c4e2cd04bcd994@932016 13f79535-47bb-0310-9956-ffa450edef68

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