OpenSystemsDevelopment / qpdf

Amend fuzz future

Refactor QPDF::parse_xrefEntry

QPDF::processXRefStream

Update README-maintainer with wip / modernize qpdf

Fuzz future

A file that has Widget annotations that can't be mapped back to form
fields would crash qpdf json.

Standardize on "qpdf"

Use "QPDF" only for the QPDF class itself.

This works with Visual Studio Build Tools 2022 installed.

Fix QPDF::tableSize

Change the processed Index array to a vector of <first object, number of
entries> pairs.

Add closure damaged to create damagedPDF exceptions.

Tune processing of subsections.

Tune pointer arithmetic.

Apply temporary fix to deal with fuzz case 68915.

(Error is an integer overflow which would immediately cause a runtime error
as a result of a call to QInitCQIntC::to_size.)

Fix bug in QPDFWriter::preserveObjectStreams

Code failed to allow for QPDF::getCompressibleObjSet deleting objects
from the object cache in case of multiple entries for the same object id.

Add fuzz test case 68668.

Fix bugs in #1161