giflib: Fix build issue on recent Android NDK versions

[eigenraven]

Summary

Changes to recipe: giflib/5.2.x

Sets a maximum CMake policy version of 3.31.0 alongside the existing minimum of 3.1 to fix build issues when using recent Android NDKs that require CMake policies from 3.3.

Motivation

Without this patch, trying to use giflib in an Android ndk r27 project results in the following error:

CMake Warning (dev) at /home/runner/work/ubq/ubq/.conan2/p/androcf6124664d526/p/bin/build/cmake/flags.cmake:46 (if):
  Policy CMP0057 is not set: Support new IN_LIST if() operator.  Run "cmake
  --help-policy CMP0057" for policy details.  Use the cmake_policy command to
  set the policy and suppress this warning.

  IN_LIST will be interpreted as an operator when the policy is set to NEW.
  Since the policy is not set the OLD behavior will be used.
Call Stack (most recent call first):
  /home/runner/work/.../.venv/lib/python3.11/site-packages/cmake/data/share/cmake-3.30/Modules/Platform/Android-Clang.cmake:23 (include)
  /home/runner/work/.../.venv/lib/python3.11/site-packages/cmake/data/share/cmake-3.30/Modules/Platform/Android-Clang-C.cmake:1 (include)
  /home/runner/work/.../.venv/lib/python3.11/site-packages/cmake/data/share/cmake-3.30/Modules/CMakeCInformation.cmake:48 (include)
  CMakeLists.txt:2 (project)
This warning is for project developers.  Use -Wno-dev to suppress it.

CMake Error at /home/runner/work/ubq/ubq/.conan2/p/androcf6124664d526/p/bin/build/cmake/flags.cmake:46 (if):
  if given arguments:

    "hwaddress" "IN_LIST" "ANDROID_SANITIZE"

  Unknown arguments specified
Call Stack (most recent call first):
  /home/runner/work/.../.venv/lib/python3.11/site-packages/cmake/data/share/cmake-3.30/Modules/Platform/Android-Clang.cmake:23 (include)
  /home/runner/work/.../.venv/lib/python3.11/site-packages/cmake/data/share/cmake-3.30/Modules/Platform/Android-Clang-C.cmake:1 (include)
  /home/runner/work/.../.venv/lib/python3.11/site-packages/cmake/data/share/cmake-3.30/Modules/CMakeCInformation.cmake:48 (include)
  CMakeLists.txt:2 (project)


-- Configuring incomplete, errors occurred!

Details

Added a backwards-compatible "maximum policy version" as recommended by https://cmake.org/cmake/help/latest/command/cmake_minimum_required.html. The CMake file is really simple, and testing it with current CMake 3.31 revealed no compatibility warnings or issues after bumping the version. I've tested a local conan build on macOS 14.7 + Xcode 16 and successfully cross-compiled to Android using NDK r27.

---

• 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

[perseoGI]

I was really confused at first sight because I thought you were defining a maximum CMake version but I see now that the ... defines the maximum CMake policy (and not version). And it is also backwards compatible!

Looks good to me, thank you!

[valgur]

Need to use a newer minimum policy version instead of capping the maximum one.

[eigenraven]

@valgur I've updated to the minimum of 3.15 as suggested, but my previous solution didn't cap the maximum to 3.31 any more than the old code capped it to 3.1 - the second version in the version range is used to apply newer CMake policies up to a certain version to indicate wider tested compatibility across a range of versions and doesn't in any way limit using newer versions.

[perseoGI]

I have made some recipe refactor.
This kind of changes are restricted to conan maintainers.
Also this changes are needed right now to force the revision export.
Ignore them!