[Auto Differentiation Dev Team (auto-differentiation-dev)]

Updates xad to 2.2.0 (release: https://github.com/auto-differentiation/xad/releases/tag/v2.2.0).

• fix-msvc-stl-145.patch and fix-libcxx-21.patch are removed: both fixes are in 2.2.0.
• The VERSION file and Version.hpp.in are correct in 2.2.0, so the portfile no longer rewrites them.
• fix-install-pdb.patch is refreshed for 2.2.0 (context offset only).
• XAD_TAPE_CHECKS is new in 2.2.0 and defaults to ON in Debug builds. It adds a member to the tape class, and only the release headers are installed, so the port sets it OFF for both configurations.

Tested on x64-linux (GCC 15): vcpkg install xad, plus a small consumer using find_package(XAD CONFIG REQUIRED) and XAD::xad, built and run in Release and Debug.

• Changes comply with the maintainer guide.
• SHA512s are updated for each updated download.
• The "supports" clause reflects platforms that may be fixed by this new version, or no changes were necessary.
• Any fixed CI baseline and CI feature baseline entries are removed from that file, or no entries needed to be changed.
• All patch files in the port are applied and succeed.
• The version database is fixed by rerunning ./vcpkg x-add-version --all and committing the result.
• Exactly one version is added in each modified versions file.

[Copilot]

🔵 Needs a closer look

Unavailable upstream 2.2.0 sources and CI results prevented independent verification of the removed MSVC/libc++ fixes and Debug/Release tape-layout behavior.

No open issues 🎉

What changed in this PR

Updates the vcpkg xad port to 2.2.0, removes workarounds now included upstream, and keeps Debug and Release tape layouts consistent.

Changes:

• Updates the source checksum, port version, baseline, and version history.
• Removes obsolete compiler patches and version-file rewrites; refreshes the PDB-install patch.
• Disables XAD_TAPE_CHECKS in both configurations to match the installed headers.

No additional builds or consumer tests were run.

File	Description
versions/​x-/​xad.json	Adds the 2.2.0 version entry.
versions/​baseline.json	Advances the default version to 2.2.0.
ports/​xad/​vcpkg.json	Updates the declared version.
ports/​xad/​portfile.cmake	Updates the checksum, removes workarounds, and disables tape checks.
ports/​xad/​fix-msvc-stl-145.patch	Removes the compiler fix included upstream.
ports/​xad/​fix-libcxx-21.patch	Removes the libc++ fix included upstream.
ports/​xad/​fix-install-pdb.patch	Refreshes patch context for 2.2.0.

_{Review effort: Balanced}