[libpng/1.6.44] Add a new version of libpng

[datalogics-robb]

Changes from version 1.6.43 to version 1.6.44

• Hardened calculations in chroma handling to prevent overflows, and
  relaxed a constraint in cHRM validation to accomodate the standard
  ACES AP1 set of color primaries.
  (Contributed by John Bowler)
• Removed the ASM implementation of ARM Neon optimizations and updated
  the build accordingly. Only the remaining C implementation shall be
  used from now on, thus ensuring the support of the PAC/BTI security
  features on ARM64.
  (Contributed by Ross Burton and John Bowler)
• Fixed the pickup of the PNG_HARDWARE_OPTIMIZATIONS option in the
  CMake build on FreeBSD/amd64. This is an important performance fix
  on this platform.
• Applied various fixes and improvements to the CMake build.
  (Contributed by Eric Riff, Benjamin Buch and Erik Scholz)
• Added fuzzing targets for the simplified read API.
  (Contributed by Mikhail Khachayants)
• Fixed a build error involving pngtest.c under a custom config.
  This was a regression introduced in a code cleanup in libpng-1.6.43.
  (Contributed by Ben Wagner)
• Fixed and improved the config files for AppVeyor CI and Travis CI.

Summary

Changes to recipe: *libpng/1.6.44

Motivation

A new release of libpng is available
libpng 1.6.44 announcement

Details

---

• Read the contributing guidelines
• Checked that this PR is not a duplicate: list of PRs by recipe
• Tested locally with at least one configuration using a recent version of Conan

[conan-center-bot]

Conan v1 pipeline ✔️

All green in build 3 (2492857dd874f582ca1644bb43b1efe6a1e4a8a0):

• libpng/1.6.44:
  Built 20 packages out of 22 (All logs)

• libpng/1.6.39:
  Built 20 packages out of 22 (All logs)

• libpng/1.6.43:
  Built 20 packages out of 22 (All logs)

• libpng/1.6.38:
  Built 20 packages out of 22 (All logs)

• libpng/1.6.41:
  Built 20 packages out of 22 (All logs)

• libpng/1.6.32:
  Built 20 packages out of 22 (All logs)

• libpng/1.6.42:
  Built 20 packages out of 22 (All logs)

• libpng/1.6.40:
  Built 20 packages out of 22 (All logs)

• libpng/1.5.30:
  Built 16 packages out of 22 (All logs)

• libpng/1.6.37:
  Built 20 packages out of 22 (All logs)

---

Conan v2 pipeline ✔️

Note: Conan v2 builds are now mandatory. Please read our discussion about it.

All green in build 3 (2492857dd874f582ca1644bb43b1efe6a1e4a8a0):

• libpng/1.6.43:
  All packages built successfully! (All logs)

• libpng/1.6.42:
  All packages built successfully! (All logs)

• libpng/1.6.41:
  All packages built successfully! (All logs)

• libpng/1.6.39:
  All packages built successfully! (All logs)

• libpng/1.5.30:
  Built 8 packages out of 10 (All logs)

• libpng/1.6.32:
  All packages built successfully! (All logs)

• libpng/1.6.38:
  All packages built successfully! (All logs)

• libpng/1.6.44:
  All packages built successfully! (All logs)

• libpng/1.6.40:
  All packages built successfully! (All logs)

• libpng/1.6.37:
  All packages built successfully! (All logs)

[ErniGH]

Thanks! 😄