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Fix https://github.com/microsoft/vcpkg/issues/38114
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- [x] Changes comply with the [maintainer
guide](https://github.com/microsoft/vcpkg-docs/blob/main/vcpkg/contributing/maintainer-guide.md).
- [ ] ~~SHA512s are updated for each updated download.~~
- [ ] ~~The "supports" clause reflects platforms that may be fixed by
this new version.~~
- [ ] ~~Any fixed [CI
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- [ ] ~~Any patches that are no longer applied are deleted from the
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- [x] The version database is fixed by rerunning `./vcpkg x-add-version
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- [x] Only one version is added to each modified port's versions file.
* [libpng]fix mips64 support
* [libpng]update port version
* [libpng]update versiond database
* fix msa support for mips
* update port version database
Co-authored-by: Jamlys Lee <jamlys_lee@163.com>
* Fix unused CMake variable warning
* Acquire msys only on Windows
* Revise APNG variable names and usage
* Fix download mode usability with APNG
* Uncompress APNG patch with gzip
gzip is a default package of MSYS2 and (most) other systems.
7z download is implemented for windows only.
* Revise main CMake patches
cmake.patch deals with libpng build configuration.
fix-export-targets deals with cmake config export.
* Revise pkgconfig patching and fixup
* Additional cleanup
* Add usage based on FindPNG.cmake
* Update versions
Co-authored-by: Leonid Pospelov <pospelovlm@yandex.ru>
