PDFBOX-2252: add copyright information for BidiMirroring.txt
PDFBOX-2252: add copyright information for BidiMirroring.txt

git-svn-id: c3ad59981690829a43dc34c293c4e2cd04bcd994@1705654 13f79535-47bb-0310-9956-ffa450edef68

gavanx/pdflearn,mathieufortin01/pdfbox,gavanx/pdflearn,joansmith/pdfbox,joansmith/pdfbox,mathieufortin01/pdfbox