Log Message:
qpdf: Update to 10.3.1

Changelog:

10.3.1
This is qpdf version 10.3.1. It contains just one bug fix from
10.3.0 which could cause perfectly valid files to fail to go through
page splitting if their document-level form dictionary had a
particular characteristic. There is also code to better handle
future such problems if any are still lurking.

10.3.0
This is qpdf version 10.3.0. This release includes a few minor
fixes and some rework of the form field handling code from 10.2.0.
It turns out the code in 10.2.0 was not complete and didn't handle
several import cases including resolving conflicts when merging
the same fields more than once or fields with conflicting names
and defaults from multiple files.

10.2.0
This is qpdf version 10.2.0. This release includes several enhancements
to the API and CLI including better handling of form fields with
page splitting and merging, support for file attachments, an added
way to read a password from stdin, several enhancements to form
field and annotation helpers, and rewritten support for name and
number trees. This release also requires a C++-14 compiler. I have
no plans to require anything newer than C++-14 in the foreseeable
future. There are also a few bug fixes.