File mingw64-libsigc++3.changes of Package mingw64-libsigc++3

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Wed Jan 12 09:07:21 UTC 2022 - Ralf Habacker <ralf.habacker@freenet.de>

- Update to version 3.0.7:
  + Build: Meson build:
    - Make it possible to use sigc++ as a subproject
    - No implicit_include_directories
    - Fix build as subproject without building documentation