Build cleanup

[tritao]

Summary

Remove legacy build/IDE artifacts and old build-system files to reduce maintenance burden and keep the tree aligned with the CMake-based build.

Changes

• Remove large sets of legacy build/IDE files (old MSVC projects, Xcode project, autotools-era files, legacy CI configs).

Commits

• 0cfbdb4644: Remove old unused files.
• e37ed70140: Remove outdated build files.
• 9f7f6d91ba: Update .gitignore

[VolkerEnderlein]

Thanks for the PR. I fully agree to remove the entire build directory as it contains only obsoleted build files. The AppVeyor files are still in use to provide the full build matrix for providing the assets for releases and CI Builds.

[tritao]

Thanks for the PR. I fully agree to remove the entire build directory as it contains only obsoleted build files. The AppVeyor files are still in use to provide the full build matrix for providing the assets for releases and CI Builds.

Makes sense, I wasn't aware about that. I'll clean those changes up.

[VolkerEnderlein]

@tritao Soft bump, any progress on the issue?

[tritao]

Updated, can you check this latest version?

[VolkerEnderlein]

Thanks for the updated PR @tritao. I just had a look onto the PR, everything is fine. But to me it seems you did not removed the submodule build\general properly from the gitmodules. Can you check? Thanks.

[tritao]

Thanks for the updated PR @tritao. I just had a look onto the PR, everything is fine. But to me it seems you did not removed the submodule build\general properly from the gitmodules. Can you check? Thanks.

Updated again with that removed.

[VolkerEnderlein]

Thanks again @tritao for your valuable work on the Coin source. It is highly appreciated.