PowerPC fixes upstream, and compatibility with newer GCC.

Also, change the warnings we disable to ensure it builds with GCC 13.

Also, replaces '-Werror' with '-Wextra' for more verbosity without
causing the build to fail.

Closes: #1196

Security fixes and GCC 13 compat.

Many improvements, including support for newer GCC releases.

Also, they have dropped the SANE Exception from the genesys backend's
license.  Everything is GPL-2.0+ or Public-Domain now.

Closes: #1186

We have to patch after CMake because it's in the 3rdparty zip.

1.1.9 includes many big-endian fixes and other improvements.

* Fix use-after-free found after 1.1.9 release that causes GCC to error.
* Fix buffer overflow that might cause a crash.
* Fix two more big endian issues.

Security fixes and new download URL.

Upstream has dropped the font requirement from runtime deps, so we do
the same in our packaging.

Fixes for GCC, but also fixes various printing issues and NULL derefs.

Closes: #1175

There was a difference in the context due to other upstream changes, but
it was simple to change the patch to apply anyway.  I didn't want to
start poking with signal argument changes..

* Convert to Meson build system.
* Use upstream provided .desktop/icon files.
* Add qvidcap to qv4l2 package and auto-install when v4l-utils and
  Qt5::X11 are installed.
* Remove patches which have all been applied to upstream.

GCC 13 C++ STL doesn't bring in <cstdint>, needed by ANGLE for uint32_t.

If the build environment has a /usr/bin/python, the build system
believes it is Python 2.  Ensure that does not happen.

Non-x86 arches don't have -march= or -mtune=generic.

This has been reported upstream.

Needed for GCC 13 support, since the generated C++ code was not amenable
to GCC 13 in its prior state.

4.1.1 is the last version to support PHP 7, so I stopped there until we
are able to land PHP 8.

Closes: #1213

There is a compiler bug on PowerPC 64 that is being investigated.

Ref: #1170

git-send-email has been updated upstream to handle the new GetOpt::Long.
Bring in those patches until we can update Git.

* Use TZ=UTC for running tests.  Ref: #1169.

* Use older GCC behaviour for floating point math.  Closes: #1193.

This fixes a build error with newer GCC that defaults to the C++17
standard.  Basic operation was tested and remains functional.

It would be a *lot* better to rearchitect this, especially with how many
times it hits -Wwrite-strings.  Anyone willing to do that work would be
highly praised :)

Enums do not work like they did in the mid 1980s.  This allows the build
to work on GCC 13.  I have tested basic usage of cpio and pax tools.