PDFBOX-2501: skip one LF if needed (malformed inline image syntax)

git-svn-id: https://svn.apache.org/repos/asf/pdfbox/trunk@1640177 13f79535-47bb-0310-9956-ffa450edef68
PDFBOX-2469: don't decrypt the Signature dictionary when using the old parser

git-svn-id: https://svn.apache.org/repos/asf/pdfbox/trunk@1640178 13f79535-47bb-0310-9956-ffa450edef68