graphics/libwmf: update 0.2.8.4 -> 0.2.12
- Switch to active fork (removes the need to patch for mutliple CVEs) This is what Alpine Linux, Arch Linux, Debian and Fedora uses.
- Add patch to use pkg-config (pkgconfig) to detect freetype(2)
https://github.com/caolanm/libwmf (no proper release notes available)
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